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Re: CVE-2026-82434: Apache Storm Nimbus, Apache Storm Client: Disclosure of the Topology ZooKeeper Credential to Read-Only Users and to Logs

Follow-up on oss-security asks why CVE-2026-82434, Apache Storm ZooKeeper credential disclosure to read-only users and logs, lacks a severity rating.

Gabriel Ravier replied to the oss-security disclosure thread for CVE-2026-82434, which affects Apache Storm Nimbus and Apache Storm Client. The vulnerability involves disclosure of the topology ZooKeeper credential to read-only users and to logs. The reply questions whether the CVE was filed without a severity rating or if it is simply missing from the listing. No exploitation details or affected versions are provided in the post.

oss-securitySep 13, 19:51 UTC · 3d agoVulnerability 2 sources CVE-2026-82434

MacOS 27 - First Boot, (Tue, Sep 15th)

SANS ISC documents the expected network traffic macOS 27 'Golden Gate' generates on first boot to help defenders baseline their networks.

Johannes Ullrich of SANS Internet Storm Center captured roughly 300 packets from a macOS 27 'Golden Gate' system before user login, covering DHCP, IPv6 duplicate address discovery, DNS, and TCP behavior. macOS 27 resolves hostnames like albert.apple.com (device activation, certificate-pinned), push messaging hosts, and ipv4only.arpa for NAT64 networks. The OS still uses a TCP window scale of 6, ECN, and random timestamps, with only four TCP connections observed during boot. The analysis provides a reference baseline for security teams monitoring Apple endpoints.

SANS Internet Storm CenterSep 15, 15:23 UTC · 1d agoResearch

Critical NetScaler Vulnerability Exploited in Attacks

CISA added critical Citrix NetScaler flaw CVE-2026-19490 (CVSS 9.3) to its KEV catalog after confirming exploitation of gateway and AAA virtual servers in the wild.

CISA warned that threat actors are exploiting CVE-2026-19490, a critical-severity flaw (CVSS 9.3) affecting NetScaler ADC and NetScaler Gateway appliances configured as a gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server. Citrix patched the bug on August 19, and Rapid7 warned it is remotely exploitable without authentication. Sensor data from Previdian shows exploitation ongoing since at least September 3, one day after a public exploit appeared on GitHub, with matching requests observed from three IPs across three countries. CISA added the flaw to its Known Exploited Vulnerabilities catalog, giving federal agencies three days to patch under BOD 26-04.

SecurityWeekupdated Sep 10, 18:57 UTC · 6d agofirst Sep 10, 12:20 UTC · 6d agoExploit / PoC in the wild 5 sources CVE-2026-194902· 2 reads

ISC Stormcast For Thursday, September 3rd, 2026 https://isc.sans.edu/podcastdetail/10080, (Thu, Sep 3rd)

SANS Internet Storm Center released its daily Stormcast audio briefing for September 3rd, 2026.

The SANS Internet Storm Center published its regular daily Stormcast podcast episode. The feed text contains no substantive threat details, only the podcast link and licensing information. No specific incidents, vulnerabilities, or advisories can be extracted from the available text.

SANS Internet Storm CenterSep 3, 02:00 UTC · 13d agoAdvisory

CVE-2026-82438: Apache Storm Webapp: Authenticated API Responses Exposed to Arbitrary Web Origins

Three CORS misconfigurations in Apache Storm 3.0.0 let malicious web pages from arbitrary origins read authenticated API responses.

CVE-2026-82438 (severity: important) affects Apache Storm Webapp (storm-webapp) versions 3.0.0 before 3.1.0. Three separate mechanisms allowed a web page on an unrelated origin to read responses served to authenticated users, including the Logviewer reflecting the request's Origin header in Access-Control-Allow-Origin while also sending Access-Control-Allow-Credentials. This enables a malicious site to silently exfiltrate authenticated Storm API and log data from a victim's browser session.

oss-securitySep 13, 14:39 UTC · 3d agoVulnerability CVE-2026-824381

ISC Stormcast For Wednesday, September 9th, 2026 https://isc.sans.edu/podcastdetail/10086, (Wed, Sep 9th)

SANS Internet Storm Center publishes its daily Stormcast cybersecurity news podcast for Wednesday, September 9th, 2026.

The ISC Stormcast is the SANS Internet Storm Center's daily short-form cybersecurity news podcast. This item is the episode for Wednesday, September 9th, 2026, linking to the podcast detail page. No article content was included beyond the podcast link and Creative Commons license notice, so no specific incidents or topics are described.

SANS Internet Storm CenterSep 9, 02:00 UTC · 7d agoAdvisory

CVE-2026-82441: Apache Storm Nimbus: Cross-Tenant Blob Deletion and Cluster Denial of Service via Unvalidated Topology Dependency Keys

Unvalidated topology dependency keys in Apache Storm Nimbus 3.0.0 enable cross-tenant blob deletion and cluster denial of service.

CVE-2026-82441 (severity: moderate) affects Apache Storm Nimbus (storm-server) versions 3.0.0 before 3.1.0. Topology submissions carry dependency_jars and dependency_artifacts blobstore key lists that Nimbus never validated on the submission path, yet acted on during cleanup of finished topologies. A malicious submitter could reference arbitrary blobstore keys, causing cross-tenant blob deletion and cluster-wide denial of service.

oss-securitySep 13, 14:42 UTC · 3d agoVulnerability CVE-2026-824411

ISC Stormcast For Monday, September 14th, 2026 https://isc.sans.edu/podcastdetail/10092, (Mon, Sep 14th)

SANS Internet Storm Center publishes its routine daily Stormcast podcast episode for Monday, September 14, 2026.

The SANS Internet Storm Center released its daily Stormcast podcast for September 14, 2026. The entry contains only a link to the podcast page and licensing information, with no specific security topics detailed in the text. Stormcast is a recurring daily briefing summarizing recent security news and handler observations.

SANS Internet Storm Centerupdated 02:00 UTC · 18h agofirst Sep 14, 02:00 UTC · 2d agoIndustry 5 sources

ISC Stormcast For Friday, September 4th, 2026 https://isc.sans.edu/podcastdetail/10082, (Fri, Sep 4th)

SANS Internet Storm Center daily Stormcast podcast episode for Friday, September 4, 2026, summarizing current security events.

Routine daily podcast entry from the SANS Internet Storm Center dated September 4, 2026. The feed item contains only licensing text with no substantive content in this dataset.

SANS Internet Storm CenterSep 4, 02:00 UTC · 12d agoAdvisory

CaptiveCrunch: Midnight Blizzard Weaponizes Hotel Wi-Fi Captive Portals to Steal Microsoft 365 Credentials

Zscaler details CaptiveCrunch: Midnight Blizzard's Storm-2945 compromises hotel Wi-Fi captive portals to redirect guests and harvest Microsoft 365 credentials via device code phishing.

Zscaler ThreatLabz analyzed the CaptiveCrunch credential theft campaign first reported by Microsoft on July 31. Microsoft attributes the activity to Storm-2945, a sub-cluster of Russia-linked Midnight Blizzard (APT29, Cozy Bear, NOBELIUM, BlueBravo). The actor manipulates DNS and HTTP traffic on captive portal networks at hotels and conference centers, redirecting victims to attacker-controlled infrastructure for Microsoft 365 credential harvesting, device code phishing, and malware delivery. Evidence indicates shared captive portal services were compromised rather than each venue being breached individually.

Zscaler ThreatLabzAug 11, 22:06 UTC · Aug 11, 2026Threat actor in the wild

ISC Stormcast For Wednesday, September 2nd, 2026 https://isc.sans.edu/podcastdetail/10078, (Wed, Sep 2nd)

SANS Internet Storm Center's daily Stormcast briefing for September 2, 2026; the feed carries no substantive story details.

This is the RSS shell for the ISC Stormcast daily podcast episode dated Wednesday, September 2, 2026. The provided text contains only licensing boilerplate and a link, with no incident, vulnerability, or threat details to extract.

SANS Internet Storm CenterSep 2, 02:00 UTC · 14d agoAdvisory

SonicWall security advisory (AV26-853)

Canada's Cyber Centre relays a SonicWall advisory flagging vulnerabilities in NetExtender Linux Client 3.5 and earlier, urging administrators to apply updates as available.

The Canadian Centre for Cyber Security issued advisory AV26-853, noting SonicWall vulnerabilities affecting NetExtender Linux Client version 3.5 and earlier as of August 25, 2026. The relay provides no CVE identifiers or exploitation details and directs users and administrators to review SonicWall's security advisories and apply updates as they become available.

Canadian Centre for Cyber SecurityAug 27, 12:44 UTC · 20d agoAdvisory

ISC Stormcast For Tuesday, September 8th, 2026 https://isc.sans.edu/podcastdetail/10084, (Tue, Sep 8th)

SANS Internet Storm Center's daily Stormcast podcast digest for September 8, 2026, summarizing current internet security activity.

The SANS Internet Storm Center published its daily Stormcast audio briefing for Tuesday, September 8, 2026. The available item text contains only licensing and URL metadata, with no specific vulnerabilities, incidents, or topics described.

SANS Internet Storm CenterSep 8, 02:00 UTC · 8d agoAdvisory

ISC Stormcast For Tuesday, September 1st, 2026 https://isc.sans.edu/podcastdetail/10076, (Tue, Sep 1st)

SANS Internet Storm Center's daily Stormcast podcast for September 1, 2026 summarizes current internet threat activity; no detailed content provided.

This is the daily ISC Stormcast audio briefing from the SANS Internet Storm Center for Tuesday, September 1st, 2026. No article body was provided, so the specific stories covered in this episode cannot be extracted. Stormcast episodes typically summarize notable internet-wide security events and handler findings.

SANS Internet Storm CenterSep 1, 02:00 UTC · 15d agoAdvisory

Mozilla security advisory (AV26-868)

Canada's Cyber Centre reports Mozilla vulnerabilities fixed in Firefox 155 and Firefox ESR 115.40, 140.15, and 153.2.

Canadian Centre for Cyber Security advisory AV26-868, dated September 1, 2026, notes vulnerabilities in Firefox (versions prior to 155) and Firefox ESR (prior to 115.40, 140.15, and 153.2). The bulletin links to Mozilla's security advisories and urges users and administrators to update. No CVE identifiers or exploitation details are provided.

Canadian Centre for Cyber SecuritySep 1, 18:14 UTC · 15d agoAdvisory

Honeypot-Omaha and batch.py [Guest Diary], (Wed, Sep 2nd)

A SANS ISC guest diary describes batch.py, a Python tool that consolidates honeypot logs and enriches IOCs with threat intelligence data.

Written by a SANS.edu BACS intern, the diary explains analysis of the DShield Honeypot-Omaha sensor, which uses Cowrie to emulate SSH and Telnet and log attacker activity. The author's batch.py script implements a four-phase pipeline with SHA-256-generated master and guest authentication to consolidate JSON and log files, correlate data via external APIs, and produce MITRE, CVE, geolocation, threat-score and fingerprint enrichment for investigated indicators.

SANS Internet Storm CenterSep 3, 02:02 UTC · 13d agoTools1

The Coding-Agent Trap: When a "Free" LLM Endpoint Is the Adversary, (Mon, Aug 31st)

A SANS honeypot caught a real coding-agent session routed to a rogue "free" LLM endpoint, exposing a Windows user's transcript and tool outputs.

A SANS analyst describes how an internet-exposed inference honeypot was discovered, relabeled with sought-after model names like DeepSeek, and enrolled in infrastructure serving "free" LLM backends. On 2026-08-30 an opencode terminal coding agent sent an 88-message, 224 KB transcript 210 times in 91 seconds via a China Unicom relay, exposing directory listings, tool outputs and read file portions. The analyst frames tool-enabled agents treating model endpoints as trusted control planes as a novel risk — a "rogue model endpoint" that could request tool executions on the user's machine.

SANS Internet Storm CenterAug 31, 20:00 UTC · 16d agoAI safety & security1

CVE-2026-82435: Apache Storm Worker: Unauthenticated Remote Memory Exhaustion in the Worker Messaging Decoder

Unauthenticated remote memory exhaustion in Apache Storm Worker 3.0.x Netty decoder fixed in 3.1.0, allowing pre-auth denial of service.

CVE-2026-82435 (rated important) affects Apache Storm Worker (org.apache.storm:storm-client) versions 3.0.0 before 3.1.0. The worker's Netty message decoder sits ahead of SASL authentication handlers and processes frames before any authentication occurs. It allocates buffers sized from an attacker-controlled length field, so a single frame from an unauthenticated peer reaching the worker can exhaust memory. Users must upgrade to 3.1.0.

oss-securitySep 13, 14:35 UTC · 3d agoVulnerability CVE-2026-824353

Scans for Proxmox Servers, (Wed, Sep 9th)

SANS observed increased scanning and brute-force attacks on port 8006 targeting unsupported Proxmox VE 7 servers after a recent vulnerability advisory.

SANS Internet Storm Center reported a bump in scans for port 8006 and additional brute-force traffic against Proxmox VE servers following a Proxmox advisory about a vulnerability in older releases. The flaw only affects Proxmox VE version 7, which has been unsupported for a couple of years. Observed activity includes POST requests to /api2/json/access/ticket with root@pam usernames and weak passwords, fingerprinting requests, and POSTs to /api2/extjs/access/ticket; failed logins return 401 status codes and non-TLS POSTs return 308 redirects.

SANS Internet Storm CenterSep 9, 17:46 UTC · 7d agoExploit / PoC

Mozilla security advisory (AV26-924)

Canadian Cyber Centre advisory AV26-924 lists vulnerabilities in Firefox 156 and Firefox ESR 115.41, 140.16, and 153.3, urging users to update.

The Canadian Centre for Cyber Security issued advisory AV26-924 on September 15, 2026, covering vulnerabilities in Firefox versions prior to 156 and Firefox ESR versions prior to 115.41, 140.16, and 153.3. Users and administrators are encouraged to review Mozilla's security advisories and apply updates. No exploitation details are included in the advisory.

Canadian Centre for Cyber SecuritySep 15, 18:54 UTC · 1d agoAdvisory

GNU security advisory (AV26-923)

Canadian Cyber Centre advisory AV26-923 flags a stack overflow in GNU libextractor before v1.15 via OLE2 files.

The Canadian Centre for Cyber Security issued advisory AV26-923 on September 15, 2026, covering CVE-2026-91752, a stack overflow vulnerability in GNU libextractor versions prior to 1.15 triggered via OLE2 file parsing. The Cyber Centre encourages users and administrators to review the provided links and apply necessary updates as they become available.

Canadian Centre for Cyber SecuritySep 15, 15:10 UTC · 1d agoAdvisory CVE-2026-91752

numbat - AI agent observability, (Fri, Sep 4th)

SANS reviews Perplexity's open source numbat, a Go-based tool giving security teams observability, detection rules, and enforcement for AI agents like Claude and Gemini.

Numbat, Perplexity AI's open source observability tool, monitors desktop, CLI, IDE, and gateway AI agents through local hooks, OTLP/HTTP logs, and on-disk session artifacts. It ships detection rules mapped to MITRE ATT&CK (e.g., recon.network_sweep / T1046), supports enforcement mode, and packages investigations with SHA256-verified manifests and timelines. The SANS review positions it as a response to unmanaged AI agent and MCP server sprawl highlighted by the OpenAI/Hugging Face incident.

SANS Internet Storm CenterSep 5, 03:39 UTC · 11d agoAI tools & infra

Storm-1175 Replaces Medusa With New StormEncryptor Ransomware

Microsoft reports China-linked ransomware group Storm-1175 switched from Medusa to a new C++ strain, StormEncryptor, likely exploiting N-able flaw CVE-2026-18577.

Microsoft Threat Intelligence reports that the financially motivated, China-linked group Storm-1175 began deploying a new ransomware strain called StormEncryptor on August 2, 2026, replacing its previous Medusa ransomware. StormEncryptor is written in C++, appends the .encrypted extension to files, and drops a !!!README_FIRST!!!.txt ransom note in each scanned directory. Microsoft assesses the group is likely exploiting CVE-2026-18577, an authentication bypass in N-able disclosed on August 2, 2026 and added to CISA's Known Exploited Vulnerabilities catalog the next day. Since 2023, Storm-1175 has exploited more than 16 vulnerabilities in products including Microsoft Exchange, Ivanti, ConnectWise ScreenConnect, JetBrains TeamCity, SimpleHelp, CrushFTP, and GoAnywhere MFT, often moving from initial access to data theft and ransomware deployment within days.

Security AffairsAug 13, 08:09 UTC · Aug 13, 2026Ransomware in the wildCVE-2026-18577 CVE-2026-1731 CVE-2023-21529+15 CVEs1

Scans Targeting Hospitality Applications, (Wed, Sep 16th)

Scans from a bulletproof-hosting IP target the abandoned PIAF-HMS hospitality application, which contains numerous unpatched SQL injection flaws.

SANS ISC observed requests for /PIAF-HMS/ using the unusual user-agent Farez-Sorter/1.0, along with paths like /admin/, /ucp/, /hms/, and /hotel/, starting September 15 from the single source IP 94.102.49.125 (IP Volume, AS202425, a bulletproof hoster). PIAF-HMS, a PBX in a Flash Hospitality Management System, was last updated 10 years ago and a SQL injection vulnerability was reported recently; the code shows many injection flaws and lacks authentication and access control. The handler notes hotels are soft targets for personal data theft and guest MitM attacks, and asks for community insight on the campaign.

SANS Internet Storm Center18:44 UTC · 1h agoExploit / PoC

CVE-2026-84179: Apache Storm Nimbus, Apache Storm UI: Disclosure of Unredacted Merged Daemon Configuration via the Topology Page

Apache Storm Nimbus/UI 3.0.0 leaks unredacted merged daemon configuration through the topology page, exposing secrets to UI users.

CVE-2026-84179 (severity: important) affects Apache Storm Nimbus (storm-server) and Storm UI (storm-webapp) versions 3.0.0 before 3.1.0. The getTopologyPageInfo function merged the Nimbus daemon configuration with topology configuration and returned it unredacted in the topology_conf field of TopologyPageInfo, which the Storm UI copied verbatim. This can expose sensitive daemon configuration values to topology users.

oss-securitySep 13, 14:44 UTC · 3d agoVulnerability CVE-2026-84179

Guildma (Astaroth) malware infection from Brazilian Portuguese email, (Tue, Sep 1st)

Guildma (Astaroth) malware spread via geofenced Brazilian Portuguese phishing emails, using zip archives, shortcuts, and AutoIt loaders.

SANS researchers documented a Guildma (Astaroth) malware infection initiated on 2026-08-31 by a malicious Brazilian Portuguese email offering a DocuSign-themed PDF. The delivery link is geofenced to Brazil and requires Brazilian Portuguese browser and OS language settings, otherwise serving a legitimate installer. The infection chain uses a zip archive containing a Windows shortcut that retrieves a DLL saved as an alternate data stream, which installs a compiled AutoIt package for persistence. Unique SHA-256 indicators and HTTPS traffic to Azure-hosted and .cfd domains were observed, with prior reports noting the campaign's abuse of GitHub.

SANS Internet Storm CenterSep 1, 21:30 UTC · 14d agoMalware in the wild

Detecting cloud ransomware in Azure with Tenable One’s cloud detection and response capabilities

Tenable details ransomware group Storm-0501's Azure tenant-hijacking tactics and how its cloud detection and response identifies them.

Tenable's blog describes how cybercrime group Storm-0501 conducts cloud-first ransomware campaigns against Azure environments. The group has shifted from endpoint encryption to total hijacking of cloud tenants and systematically neutralizes resource locks, immutability policies, and backups. Tenable outlines its One Cloud Exposure detections, using AI-powered threat stories and precision alerts, to expose these TTPs early.

Tenable BlogAug 17, 15:15 UTC · Aug 17, 2026Threat actor in the wild

Microsoft Plugs Nearly 1,000 Security Holes

Microsoft's September Patch Tuesday fixes a record 974 flaws, including two actively exploited Windows zero-days and critical DNS and Windows Shell bugs.

Microsoft released fixes for 974 vulnerabilities, its largest-ever monthly patch batch, bringing the 2026 total above 2,600. Two zero-day privilege elevation flaws, CVE-2026-81963 and CVE-2026-85880, are being actively exploited. Critical bugs include CVE-2026-69730, an unauthenticated DNS weakness in Windows Server 2012 onward and Windows 10 deemed likely to be exploited, and CVE-2026-69829, a CVSS 9.8 Windows Shell remote code execution flaw requiring no privileges or user interaction. Microsoft and other vendors credit AI-assisted discovery for the growing patch volumes.

Krebs on SecuritySep 8, 21:44 UTC · 7d agoVulnerability in the wildCVE-2026-81963 CVE-2026-85880 CVE-2026-69730+1 CVEs

CVE-2026-82433: Apache Storm Nimbus, Apache Storm UI: Disclosure of Unredacted Daemon Configuration via Nimbus and the UI

Apache Storm Nimbus and UI return unredacted daemon configuration, including ZooKeeper and keystore secrets, to authorized users.

CVE-2026-82433 (rated moderate) affects Apache Storm Nimbus (storm-server) and Storm UI (storm-webapp) versions 3.0.0 before 3.1.0. The getNimbusConf operation returned the complete daemon configuration without redaction after only a user-level authorization check. Where configured, the response includes storm.zookeeper.auth.payload plus keystore and related secrets.

oss-securitySep 13, 14:32 UTC · 3d agoVulnerability CVE-2026-82433

Critical MikroTik Vulnerability - Patch Now, (Sun, Sep 6th)

MikroTik patched a critical SSH authentication bypass already exploited in the wild; attackers add accounts to affected routers for post-patch persistence.

MikroTik released a patch late last week for a critical vulnerability allowing SSH authentication bypass that is already being exploited in the wild, per the vendor's September 2026 advisory. Attackers have been adding new accounts to affected devices to maintain access even after the patch is installed. The patch attempts to detect compromise and set a 'Flagged' status on affected devices, and SANS ISC advises administrators to assume compromise.

SANS Internet Storm CenterSep 6, 21:43 UTC · 9d agoExploit / PoC in the wild

Commvault security advisory (AV26-895)

Canada's Cyber Centre advisory AV26-895 warns Commvault Cloud builds before 11.36.123/11.40.72/11.44.20/11.46.20 are affected by a Command Center API authentication bypass.

The Canadian Centre for Cyber Security alerted users that Commvault Cloud versions 11.36, 11.40, 11.44 and 11.46, prior to fixed builds 11.36.123, 11.40.72, 11.44.20 and 11.46.20, are affected by issue CV_2026_07_1, a Command Center API authentication bypass. Administrators are encouraged to review the linked vendor advisories and apply the available updates.

Canadian Centre for Cyber SecuritySep 8, 18:11 UTC · 8d agoAdvisory

The Self-Expanding Stolen Inference Supply Chain: An AI Agent Harvesting and Re-Serving LLM Access, (Fri, Sep 11th)

An autonomous coding agent harvested LLM API access from poorly secured gateways and aggregated stolen inference capacity behind a self-hosted gateway

A SANS researcher observed a semi-autonomous coding agent finding weakly secured LLM resale gateways via FOFA queries, creating trial accounts with temporary emails and CAPTCHA solving, and exploiting weak authorization such as client-supplied group_id fields. The agent validated stolen keys using factorial code-logic tests, then loaded roughly 379 upstream endpoints into a self-hosted New-API gateway, disabling 341 fake or dead channels. Five model names including claude-opus-5 and gpt-5.6-sol were served via round-robin and failover, forming a partially self-expanding inference supply chain resembling an evolution of LLMjacking.

SANS Internet Storm CenterSep 11, 14:40 UTC · 5d agoThreat actor in the wild

Atomic macOS (AMOS) Stealer Activity

Unit 42 details an August 2026 AMOS macOS stealer infection delivered via fake 'macOS toolkit' pages and Terminal paste commands, exfiltrating credentials to C2.

Unit 42 analyzed an AMOS (Atomic macOS Stealer) infection from August 5, 2026, initiated via a page at getmacouscloud[.]com instructing users to paste a command into Terminal. The command fetched a Zsh script from ferncore13[.]com that delivered a Mach-O installer to /tmp/helper and supporting files under /Library/Application Support/.com.apple.accountsd/ and .com.apple.metadata.mds/. AMOS collected browser data, credentials, cryptocurrency wallets (Binance, TonKeeper), Telegram data, and FileGrabber content such as AWS and gcloud files, uploading it via HTTP POST to C2 server 161.35.146[.]120. AMOS has been advertised on Telegram since April 2024 and distributed via ClickFix campaigns, malicious ads, and cracked-software sites.

Palo Alto Unit 4210:00 UTC · 10h agoMalware in the wild

Citrix urges customers to fix critical NetScaler authentication bypass (CVE-2026-19490)

Citrix patched a critical authentication bypass, CVE-2026-19490, in NetScaler Gateway and NetScaler ADC, urging customers to upgrade immediately.

Citrix has patched two flaws in NetScaler ADC and NetScaler Gateway. CVE-2026-19490 is a critical authentication bypass (CVSS v4.0 9.3) that works when the appliance is configured as an SSL VPN, ICA Proxy, CVPN, RDP Proxy Gateway or AAA virtual server, with additional conditions depending on firmware and SAML configuration. A second flaw, CVE-2026-19489 (CVSS 8.8), is a memory overflow that can cause denial of service when SIP ALG is enabled on LSN setups. Rapid7 had not observed exploitation as of August 19, 2026, but urged emergency patching; a signature-based mitigation is available via NetScaler Console.

Help Net SecurityAug 21, 00:00 UTC · 26d agoVulnerability CVE-2026-19490 CVE-2026-19489

Risky Bulletin: Slovakia finds Russian backdoor in traffic speed cameras

Slovakia's NBU found an SMS-triggered backdoor in Russian-made NERO R-ONE traffic cameras, pausing a 279-unit deployment.

Slovakia's national security service NBU issued an alert against NERO R-ONE high-speed traffic cameras after finding a backdoor that grants shell and network access via SMS from hardcoded Russian phone numbers. The cameras are a rebranded version of the Russian CORDON PRO.M model by St. Petersburg firm Semicon, purchased via a Cyprus shell company under a €30 million EU-funded project. The report also found SecureBoot disabled, vulnerable web management, and unauthenticated live streams; the Interior Ministry paused deployment of 279 cameras pending independent assessment.

Risky Business NewsAug 19, 04:52 UTC · 28d agoThreat actor in the wild1

Previously patched Citrix NetScaler flaw exploited in the wild (CVE-2026-8452)

Actively exploited Citrix NetScaler flaw CVE-2026-8452, patched in June, now added to CISA KEV; attackers deploy web shells and run discovery commands.

CISA added CVE-2026-8452, a memory overflow vulnerability in Citrix NetScaler ADC/Gateway, to its Known Exploited Vulnerabilities catalog on August 26, 2026, giving federal agencies until August 29 to remediate. Citrix disclosed and patched the flaw on June 30, 2026 in versions 14.1-72.61, 13.1-63.18, and 13.1-37.272. watchTowr Labs found the flaw can be chained into unauthenticated remote code execution and released a PoC on August 14. Previdian and Defused reported exploitation with web shells named x.php and z.php from at least three unique source IPs.

Help Net SecurityAug 27, 00:00 UTC · 20d agoExploit / PoC in the wildCVE-2026-8452 CVE-2015-3246 CVE-2015-5287+3 CVEs

Citrix security advisory (AV26-645) – Update 3

Canada's Cyber Centre updates Citrix advisory as CVE-2026-8451 and CVE-2026-8452 in NetScaler ADC/Gateway are confirmed exploited in the wild.

The Canadian Centre for Cyber Security updated advisory AV26-645 on August 26, 2026, covering critical vulnerabilities in Citrix NetScaler ADC and Gateway (versions 14.1 before 14.1-72.61 and 13.1 before 13.1-63.18, plus FIPS builds). Open-source reporting indicates CVE-2026-8451 and CVE-2026-8452 are being exploited in the wild. Update 3 references related CISA action, and patched builds were released starting June 30, 2026.

Canadian Centre for Cyber SecurityAug 26, 18:27 UTC · 21d agoExploit / PoC in the wildCVE-2026-8451 CVE-2026-8452

Cisco security advisory (AV26-876)

Canada's Cyber Centre relayed Cisco advisories covering a Nexus 9000 Silicon One RCE, IOS XR hardening, and denial-of-service flaws across IP phone lines.

The Canadian Centre for Cyber Security advisory AV26-876 lists Cisco vulnerabilities affecting IOS XR, Nexus 9000 Series switches, and several IP phone series. Included are a Nexus 9000 Silicon One remote code execution vulnerability, a September 2026 IOS XR security hardening release, and SIP software denial-of-service flaws in Desk Phone 9800, IP Phone 7800/8800, and Video Phone 8875. The Cyber Centre urges users and administrators to review the Cisco advisories and apply updates as they become available. No active exploitation is reported in the advisory.

Canadian Centre for Cyber SecuritySep 3, 13:13 UTC · 13d agoAdvisory

AL26-019 - Vulnerabilities impacting Citrix NetScaler ADC and NetScaler Gateway - CVE-2026-19490 and CVE-2026-19489

Canadian Cyber Centre alerts on Citrix NetScaler ADC/Gateway flaws CVE-2026-19490 (authentication bypass) and CVE-2026-19489 (buffer overflow), urging emergency patching.

The Canadian Centre for Cyber Security issued alert AL26-019 covering two Citrix NetScaler vulnerabilities disclosed in a vendor advisory on August 19, 2026. CVE-2026-19490 (CWE-288) allows a remote unauthenticated attacker to bypass authentication on appliances configured as a Gateway for SSL VPN, ICA Proxy, CVPN, RDP Proxy, or as an AAA virtual server. CVE-2026-19489 (CWE-120) is a classic buffer overflow that may cause memory overflow, unpredictable behavior, or denial-of-service conditions. Affected appliances are vulnerable when configured as a SAML IdP; fixed versions include 14.1-73.32, 13.1-63.21, and 13.1-37.277 for FIPS.

Canadian Centre for Cyber SecuritySep 4, 19:00 UTC · 12d agoAdvisory 3 sources CVE-2026-19490 CVE-2026-19489

Local governments in four states dealing with cyberattacks that have shut down services

Ransomware and cyberattacks disrupted local governments in California, Oklahoma, South Dakota, Texas and Wisconsin, taking Suisun City's 911 offline.

Suisun City, California (population 30,000) shut down its IT network after malicious software hit 911 routing, police and fire dispatch; the city declared a state of emergency and the FBI is investigating. Coweta, Oklahoma confirmed a ransomware attack affecting all computers and digital services, with off-site backups slated for restoration. Mitchell (South Dakota), Coryell County (Texas) and Washburn County (Wisconsin) also disclosed cyberattacks that shut down networks and disrupted phone and payment systems.

The RecordAug 11, 13:14 UTC · Aug 11, 2026Ransomware in the wild