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Hackers Exploit Critical Cisco Firewall Flaw to Gain Root Access and Deploy Malware

State-sponsored and ransomware actors actively exploit critical Cisco FMC flaws CVE-2026-20079 (CVSS 10.0) and CVE-2026-20316 to gain root access and deploy ransomware.

Cisco Talos confirmed in-the-wild exploitation of CVE-2026-20079 (CVSS 10.0, unauthenticated authentication bypass enabling root command execution) and CVE-2026-20316 (CVSS 5.3, hard-coded static credentials) in Cisco Secure Firewall Management Center. Three activity clusters were identified: UAT-12197 dropping a JSP web shell and credential harvester; UAT-11823, assessed as Sandworm, deploying a Cyclops Blink variant; and UAT-11988, a Qilin ransomware affiliate chaining the flaws before deploying ransomware. CISA added both CVEs to the KEV catalog with a September 12 remediation deadline for federal agencies.

Cyber Security Newsupdated · 2d agofirst · 6d agoExploit / PoC in the wild 10 sourcesCVE-2026-20079CVE-2026-20316

MFA's Weakest Link: Account Recovery Is the New Attack Path

Help desk account recovery is increasingly the weakest link in MFA-protected identities, as Scattered Spider's impersonation-driven Marks & Spencer attack demonstrated.

As MFA, conditional access, and phishing-resistant factors raise the cost of direct account takeover, attackers increasingly target the recovery process, convincing service desk staff to reset passwords or re-register MFA on attacker-controlled devices. CISA, FBI, and partner advisories describe Scattered Spider posing as employees to trigger such resets; the 2025 Marks & Spencer attack began this way and led to ransomware with an estimated £300 million profit impact. Microsoft now describes Entra ID account recovery as a high-assurance process, and the article promotes Specops Secure Service Desk for verified identity workflows.

BleepingComputer · 7d agoPhishing & fraud

UAT-10147 deploys SPECTRE: A cross-platform implant with Linux rootkit and BYOVD capabilities

Cisco Talos identifies UAT-10147 deploying the SPECTRE implant with cross-platform C2, credential theft, and kernel-level EDR bypass.

Cisco Talos reports that the tracked threat actor UAT-10147 is deploying a newly identified implant named SPECTRE. SPECTRE supports cross-platform command-and-control, process injection, credential theft, and anti-analysis protections. It also includes a Linux rootkit and BYOVD (bring your own vulnerable driver) capability enabling kernel-level EDR bypass, marking an evolution in commodity intrusion tooling.

Cisco Talos · 27d agoThreat actor in the wild

Cloudflare Workers Spectre Attack Leaks JWT From Co

Researchers demonstrated a remote Spectre attack leaking a JWT between co-located Cloudflare Workers at 12 bits per second, 360x the 2021 rate.

Security researchers showed a remote Spectre attack against Cloudflare Workers that leaked a JWT from a co-located Worker at up to 12 bits per second with 99.16% accuracy, 360 times the 2021 demonstration rate. The attack exploited weaknesses in DyPrIs dynamic process isolation, where long-lived Durable Object invocations could run before isolation and WebSocket-heavy I/O suppressed the branch-misprediction signal. Cloudflare deployed improved DyPrIs, the V8 Sandbox, and MPK-based in-process isolation, and found no indicators of active exploitation over three years.

The Hacker News · 28d agoVulnerability

Wärtsilä FOS-Onboard

CISA advisory: two hardcoded cryptographic key flaws in Wärtsilä FOS-Onboard 5.07.0923.01 (CVSS 9.0/9.1) could allow unauthorized updates, code execution, and credential theft.

CISA advisory ICSA-26-258-02 discloses CVE-2026-78225 (CVSS 3.1 9.0 critical), a hardcoded cryptographic server key in the deployer-ng Update Controller of Wärtsilä FOS-Onboard 5.07.0923.01. CVE-2026-81855 (CVSS 3.1 9.1 critical) is a hardcoded client authentication key in the robot testing framework component. Successful exploitation could let an attacker deliver unauthorized updates, execute code, or extract credentials to impersonate a privileged client. The product is deployed worldwide in transportation systems critical infrastructure; Cydome Security reported the flaws and CISA states no known public exploitation exists.

CISA Advisories · 1d agoAdvisoryCVE-2026-78225CVE-2026-81855

Active exploitation of Cisco Secure Firewall Management Center vulnerabilities

Cisco Talos reports in-the-wild exploitation of critical FMC flaw CVE-2026-20079 by three clusters including a Sandworm-linked APT and Qilin ransomware affiliates.

Cisco Talos is tracking active exploitation of CVE-2026-20079 (CVSS 10.0), an authentication bypass in Cisco Secure Firewall Management Center that lets unauthenticated remote attackers execute scripts and obtain root access, and CVE-2026-20316 (CVSS 5.3), which permits low-privileged logins and can be chained for privilege escalation. Talos identified three post-compromise clusters: UAT-12197 deploying JSP web shells and a JAR command executor for credential theft; UAT-11823, an APT overlapping with Sandworm, deploying a Netcat reverse shell and Cyclops Blink malware; and UAT-11988, assessed as a ransomware operator with TTPs consistent with Qilin affiliates. Hotfixes are available, with a comprehensive hardening release due the week of September 14, 2026.

Cisco Talos · 7d agoExploit / PoC in the wild 2 sourcesCVE-2026-20079CVE-2026-20316

U.S. CISA adds Apple macOS, Microsoft SharePoint, Broadcom VMware vCenter, and Microsoft IKE flaws to its Known Exploited Vulnerabilities catalog

CISA adds actively exploited flaws in Microsoft IKE, SharePoint, VMware vCenter, and macOS Screen Sharing to KEV catalog, due August 21.

CISA added four vulnerabilities to its Known Exploited Vulnerabilities catalog: CVE-2026-33824 (Windows IKE remote code execution, CVSS 9.8), CVE-2026-55040 (SharePoint JWT authentication bypass, CVSS 9.1), CVE-2026-59310 (VMware vCenter Syslog path traversal, CVSS 9.8), and CVE-2026-65400 (macOS Screen Sharing improper authentication). The SharePoint flaw combines four weaknesses including alg:none JWT forging to impersonate any user, with Defused researchers observing attackers using Rapid7's PoC against honeypots. The Dutch NCSC confirmed active exploitation of the macOS Screen Sharing flaw on August 15, 2026. Federal agencies must patch by August 21, 2026.

Security Affairs · 28d agoExploit / PoC in the wildCVE-2026-33824CVE-2026-55040CVE-2026-59310+1 CVEs

Hackers Impersonate IT Support on Microsoft Teams to Take Control of Employee PCs

Microsoft warns of a human-operated campaign where attackers pose as IT support in Teams to gain remote PC control and reach domain controllers.

Microsoft Threat Intelligence observed attackers abusing Microsoft Teams external collaboration to impersonate IT/helpdesk staff, persuading employees to grant screen control via Quick Assist or RMM tools. Operators deploy malicious MSI packages via silent msiexec, run encrypted JavaScript implants through portable Node.js, and persist via EdgeUpdate Run keys or Startup folder entries. The Node.js backdoor uses HTTPS long-polling C2, captures screenshots, enumerates Active Directory, and moves laterally over WinRM (TCP 5985) to domain controllers and certificate authorities. Initial access maps to MITRE ATT&CK T1566.003 (Spearphishing via Service); no Teams vulnerability is exploited.

GBHackers · 8d agoPhishing & fraud in the wild

Rockwell Automation ArmorStart LT

CISA flags two flaws (CVE-2026-19471, CVE-2026-19472) in Rockwell Automation ArmorStart LT <=v2.001: stored XSS and web server denial-of-service.

Rockwell Automation reported two issues in the embedded web server of ArmorStart LT v2.001 and earlier. CVE-2026-19471 involves multiple stored cross-site scripting flaws (CVSS 7.3) where unsanitized input is stored server-side and executes in other users' browsers. CVE-2026-19472 is a denial-of-service issue (CVSS 7.5) triggered by a crafted HTTP PUT request that exhausts web server resources. No public exploitation has been reported to CISA.

CISA Advisories · 13d agoAdvisory 3 sourcesCVE-2026-19471CVE-2026-19472

CVE-2026-33824: CISA Flags Windows IKE RCE as Exploited

CISA added four actively exploited vulnerabilities to its KEV catalog, headlined by CVE-2026-33824, a Windows IKE Service Extensions remote code execution flaw.

CISA's KEV addition, dated August 18, covers CVE-2026-33824 in Windows IKE Service Extensions, CVE-2026-55040 in on-premises Microsoft SharePoint Server, CVE-2026-59310 in Broadcom VMware vCenter, and CVE-2026-65400 in Apple macOS Screen Sharing. KEV listing confirms observed exploitation in the wild. Three of the four products are frequently deployed as high-value enterprise infrastructure, including remote-access endpoints and collaboration platforms.

Web discovery (articles for new exploits & KEV entries) · 8d agoExploit / PoC in the wildCVE-2026-33824CVE-2026-55040CVE-2026-59310+1 CVEs

Rockwell Automation OTTO Fleet Manager

CISA warns Rockwell Automation OTTO Fleet Manager (CVE-2026-75112, CVSS 6.8) uses insufficiently costly password hashing, easing offline brute-force attacks.

CISA published ICS advisory ICSA-26-239-03 for Rockwell Automation OTTO Fleet Manager versions 2.36.2 and earlier (CVE-2026-75112, CVSS v3 6.8). The flaw involves use of a password hash with insufficient computational effort, reducing the cost for an attacker to perform offline brute-force attacks against stored password hashes. Deployments span critical manufacturing and transportation systems sectors worldwide, with company headquarters in the United States.

CISA Advisories · 20d agoAdvisoryCVE-2026-75112

Top 10 Best Serverless Security Solutions in 2026

Buyer's guide ranks Palo Alto Prisma Cloud and Aqua top for serverless security; standalone serverless security has largely folded into CNAPP platforms.

A top-ten listicle evaluates serverless security tools across FaaS platforms like AWS Lambda, Azure Functions, and Google Cloud Functions. Prisma Cloud and Aqua lead platform coverage, Snyk owns code/dependency scanning, and Sysdig covers runtime behavior. The guide's main conclusion is that the standalone serverless security category has largely consolidated into CNAPP platforms.

Cyber Security News · 1d agoIndustry

A revisit of remote Spectre attacks on Cloudflare Workers

Cloudflare details its 2024-2025 reassessment of remote Spectre attacks on Workers, covering new attack primitives and hardened defenses.

Cloudflare reassessed the feasibility of remote Spectre attacks against its Workers serverless infrastructure across 2024 and 2025. The write-up describes new attack primitives including Spectre gadgets, remote timers, and techniques for achieving co-location with victim workloads. It also explains new defenses that further harden Cloudflare Workers against speculative-execution side channels.

Cloudflare Blog · 28d agoResearch

Cortex XSIAM Archives

Palo Alto Networks positions Cortex XSIAM as a purpose-built platform to simplify security operations and speed incident remediation.

The Unit 42 blog page is a product category archive for Cortex XSIAM. The platform is marketed as purpose-built for SecOps transformation, simplifying security operations and accelerating incident remediation against current and future threats. No research findings, incidents, or vulnerabilities are discussed.

Palo Alto Unit 42 · 8d agoIndustry 6 sources

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 Security · 26d agoVulnerabilityCVE-2026-19490CVE-2026-19489

ZDI-26-657: ASUS Control Center Express Agent Missing Authentication Remote Code Execution Vulnerability

ZDI-26-657: ASUS Control Center Express Agent has an unauthenticated remote code execution flaw, CVE-2026-19397, rated CVSS 9.8.

The Zero Day Initiative published advisory ZDI-26-657 for ASUS Control Center Express Agent. The flaw, tracked as CVE-2026-19397, lets remote attackers execute arbitrary code without authentication. ZDI assigned a CVSS 9.8 rating. The advisory accompanies a vendor patch for affected installations.

ZDI Published Advisories · 6d agoAdvisoryCVE-2026-19397

CVE-2026-19490: Critical Vulnerability Affecting Citrix NetScaler ADC and NetScaler Gateway

CVE-2026-19490 is a critical unauthenticated authentication bypass in Citrix NetScaler ADC and Gateway, remotely exploitable without user interaction.

An advisory published August 19, 2026 describes CVE-2026-19490, a critical authentication bypass affecting Citrix NetScaler ADC and NetScaler Gateway. The flaw carries a CVSS v4.0 base score of 9.3 and is remotely exploitable by unauthenticated attackers over the network without user interaction or elevated privileges. NetScaler ADC and Gateway are widely deployed enterprise products positioned at or near the network perimeter, providing load balancing, SSL/TLS offloading, and secure remote access. The text does not state whether exploitation has been observed in the wild.

Rapid7 Blog · 28d agoVulnerabilityCVE-2026-194901

OPCFoundation OPC UA LocalDiscoveryServer (LDS)

CISA warns CVE-2026-77477 (CVSS 4.6) lets local attackers hijack a privileged console during OPC UA LDS installation below version 1.04.420.

CISA published ICSA-26-246-01 for CVE-2026-77477, CWE-250 execution with unnecessary privileges in OPC Foundation UA-LDS-Installers below 1.04.420. An attacker able to launch the installer with elevated privileges and access the keyboard and display can intercept a high-privilege console window during installation and run arbitrary commands. CVSS 3.1 score is 4.6, the issue is not remotely exploitable, and no public exploitation has been reported. Lukas Schumaker of Rockwell Automation reported the flaw to OPC Foundation.

CISA Advisories · 13d agoAdvisoryCVE-2026-77477

Threat Gang 'Springs' Vishing Attacks on Microsoft Teams Users

The 'Spring Ring' operation uses vishing attacks against Microsoft Teams users to hijack sessions, deploy malware, and take over infrastructure.

Dark Reading reports on the Spring Ring threat gang conducting voice-phishing (vishing) attacks against users of Microsoft Teams. The operation aims to compromise collaboration-suite accounts to gain remote access to victim sessions, distribute malware, and potentially seize control of infrastructure. Further technical details were not provided in the available text.

Dark Reading · 14d agoPhishing & fraud1

Cisco Industrial Ethernet 1000 Series Switches Stored Cross-Site Scripting Vulnerability

Cisco fixed a stored cross-site scripting flaw in Industrial Ethernet 1000 series switches exploitable by authenticated remote users.

Insufficient validation of user-supplied input in the web-based management interface of Cisco Industrial Ethernet 1000 Series Switches allows stored XSS. An authenticated remote attacker can inject malicious code into specific interface pages and execute arbitrary script in another user's context. Exploitation requires valid credentials; Cisco has released software updates.

Cisco Security Advisories · 28d agoAdvisory

U.S. CISA adds Metabase, Windows, and Cisco Secure Firewall flaws to its Known Exploited Vulnerabilities catalog.

CISA adds three actively exploited flaws—Cisco ASA/FTD DoS, Windows Winsock SYSTEM-level UAF, and Metabase SQL injection—to its Known Exploited Vulnerabilities catalog.

CISA added CVE-2026-20349 (CVSS 8.6, heap inspection flaw crashing Cisco ASA/FTD via crafted HTTP requests to the Remote Access SSL VPN service), CVE-2026-68820 (CVSS 7.0, use-after-free in the Windows afd.sys Winsock driver allowing SYSTEM-privilege code execution, actively exploited per Microsoft) and CVE-2026-72898 (CVSS 10.0, unauthenticated SQL injection in Metabase) to the KEV catalog. Metabase disclosed its cloud service was attacked with the 0-day, giving the intruder a path to administrator rights and stored credentials for connected databases; cloud instances were patched while self-hosted deployments need urgent updates. Under BOD 22-01, federal civilian agencies must patch by August 14, 2026, except CVE-2026-68820, due August 25.

Security Affairs · 29d agoExploit / PoC in the wildCVE-2026-20349CVE-2026-68820CVE-2026-728981

12 Best Browser Isolation Solutions Compared (2026): Features & Pricing

2026 comparison ranks Zscaler, Cloudflare, Menlo Security, Garrison (Everfox), Authentic8 and Kasm among twelve remote browser isolation solutions.

Guide compares twelve RBI products across four architectures: pixel streaming, DOM/vector reconstruction, platform-embedded SSE isolation, and self-hosted containers. Zscaler and Cloudflare lead RBI delivered inside SSE platforms, while Menlo Security leads isolate-everything efficacy and Garrison (Everfox) provides hardware-grade isolation for government use. Most offerings price per user per month.

GBHackers · 1d agoTools

Rockwell Automation RSLinx Classic

CISA flags four flaws (CVE-2026-9621/9622/9624/9625) in Rockwell RSLinx Classic 4.50 and below that can cause denial-of-service conditions; CVSS 8.6.

CISA published an ICS advisory covering four vulnerabilities in Rockwell Automation RSLinx Classic versions 4.50 and below. The integer overflow, underflow, and classic buffer overflow flaws (CVE-2026-9621, CVE-2026-9622, CVE-2026-9624, CVE-2026-9625) could let attackers cause denial-of-service conditions. The product is deployed worldwide, primarily in critical manufacturing.

CISA Advisories · 15d agoAdvisoryCVE-2026-9621CVE-2026-9622CVE-2026-9624+1 CVEs

CVE-2026-52307: Stored XSS in 1CMS v5.6

CVE-2026-52307: authenticated stored XSS in 1CMS (ClassCMS) v5.6 Column Management lets attackers inject scripts via the title field.

ClassCMS 1CMS v5.6 contains an authenticated stored cross-site scripting vulnerability, CVE-2026-52307, in the Column Management component. Attackers can execute arbitrary web scripts or HTML by injecting a crafted payload into the title field. No CVSS score, patch information, or exploitation evidence was provided in the disclosure.

Full Disclosure · 8d agoVulnerabilityCVE-2026-52307

CISA Warns of N-able N-central RCE Vulnerability Exploited in the Wild

CISA added CVE-2026-86218, a CVSS 10.0 unauthenticated RCE in N-able N-central RMM, to its KEV catalog; on-premises admins must patch to 2026.3.1.14.

CISA added CVE-2026-86218, a CVSS 10.0 static code injection (CWE-96) enabling unauthenticated RCE in N-able N-central, to the Known Exploited Vulnerabilities catalog on September 8, 2026. The flaw affects all on-premises builds before 2026.3.1.14 across the 2025.4 through 2026.3 release lines; N-able shipped Hotfix 4 for 2026.3 on September 5-6, 2026. Huntress research indicates at least one customer's N-central instance was compromised on September 4, and federal civilian agencies must mitigate by September 11 under BOD 26-04. Hosted environments were patched server-side, but a compromised RMM server can serve as a single point of entry into entire MSP client bases.

Cyber Security News · 7d agoExploit / PoC in the wildCVE-2026-86218CVE-2026-86206CVE-2026-862071

Palo Alto Networks security advisory (AV26-905)

Canada's Cyber Centre relayed Palo Alto Networks advisories covering PAN-OS, Cloud NGFW, Prisma Access, and Prisma Browser vulnerabilities, including PAN-OS CVE-2026-0310 buffer overflow.

The Canadian Centre for Cyber Security issued advisory AV26-905, noting that as of September 10, 2026, multiple Palo Alto Networks products are affected by vulnerabilities. Affected products include Cloud NGFW on AWS and Azure, multiple PAN-OS versions, Prisma Access, and Prisma Browser prior to 151.26.5.170. The advisory references CVE-2026-0310, a PAN-OS buffer overflow via XML processing (PAN-SA-2026-0012), and the September 2026 Chromium monthly vulnerability update. Administrators are encouraged to review the vendor links and apply available updates.

Canadian Centre for Cyber Security · 6d agoAdvisory 3 sourcesCVE-2026-0310

mySCADA myPRO Manager

CISA advisory reveals unauthenticated privileged API access and arbitrary SMS sending in mySCADA myPRO Manager <=2.1, CVSS 9.8.

CISA advisory ICSA-26-258-03 discloses two vulnerabilities in mySCADA myPRO Manager <=2.1 with aggregate CVSS v3 of 9.8. CVE-2026-73807 (CVSS 9.8) lets unauthenticated network attackers access privileged management functions via the command API, while CVE-2026-82567 exposes an unauthenticated HTTP endpoint that sends arbitrary SMS messages through a connected GSM modem. Deployments span critical manufacturing, energy, food and agriculture, transportation, and water and wastewater sectors. CISA states no known public exploitation has been reported at this time.

CISA Advisories · 1d agoAdvisoryCVE-2026-73807CVE-2026-82567

How a Real Estate Company Turned a SQL Lockout Into Actionable Security Insight

A real estate company used Horizon3.ai's NodeZero to trace a SQL account lockout to a hidden privilege path and remediate it.

A Horizon3.ai customer story describes a large real estate company using NodeZero to investigate a SQL account lockout. The assessment traced the lockout to a deeper privilege path in the environment. The findings reportedly drove immediate remediation of the exposed privilege risk.

Horizon3.ai · 22d agoTools

Rockwell Automation FactoryTalk Activation Manager

CISA details CVE-2026-16675, a CVSS 7.8 privilege escalation flaw in Rockwell FactoryTalk Activation Manager V5.02 and below, with vendor fixes available.

CISA issued an ICS advisory for Rockwell Automation FactoryTalk Activation Manager. CVE-2026-16675 is a privilege escalation vulnerability stemming from installer custom actions, scored 7.8. Versions V5.02 and below are affected, and Rockwell Automation has released fixes.

CISA Advisories · 15d agoAdvisoryCVE-2026-16675

U.S. CISA adds a MLflow flaw to its Known Exploited Vulnerabilities catalog

CISA added actively exploited MLflow SSRF flaw CVE-2026-64849 (CVSS 9.3) to its KEV catalog; attackers are stealing cloud credentials from exposed instances.

CISA added CVE-2026-64849, a critical unauthenticated server-side request forgery in MLflow, to its Known Exploited Vulnerabilities catalog. The flaw affects MLflow versions before 3.15.0 and allows unauthenticated attackers to reach internal services including cloud metadata endpoints, exposing temporary cloud credentials. watchTowr observed in-the-wild exploitation exfiltrating credentials and secrets, plus widespread scanning of exposed MLflow instances within hours of the CVE's assignment on August 17, 2026. MLflow is an open-source platform for managing the machine learning and AI development lifecycle with over 60 million monthly downloads.

Security Affairs · 27d agoExploit / PoC in the wildCVE-2026-64849