Search: “csirt”

CISA Flags Exploited Cisco, Citrix, Fortinet Flaws, Sets Sept. 12 Federal Patch Deadline

CISA adds actively exploited Cisco, Citrix, and Fortinet edge-device flaws to KEV catalog, ordering federal agencies to patch by September 12, 2026.

CISA added CVE-2026-20079 (Cisco Secure Firewall Management Center authentication bypass, CVSS 10.0), CVE-2026-19490 (Citrix NetScaler ADC/Gateway authentication bypass, CVSS 9.3), and CVE-2025-25249 (FortiOS heap buffer overflow, CVSS 7.3) to the Known Exploited Vulnerabilities catalog with a September 12, 2026 deadline for FCEB agencies. Cisco confirmed active exploitation of CVE-2026-20079 in August 2026, while Previdian honeypots logged 56 NetScaler exploitation attempts since September 3. SOCRadar attributes Fortinet exploitation to a financially motivated Russian-speaking actor deploying the PivotC2 Node.js RAT, infecting 178 of over 3,000 targeted IP addresses, mostly in the US.

The Hacker News·updated Sep 10, 18:57 UTC · 6d ago·first Sep 10, 10:36 UTC · 6d agoExploit / PoC in the wild 5 sourcesCVE-2026-20079CVE-2026-19490CVE-2025-252491

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 Security·Sep 4, 19:00 UTC · 11d agoAdvisory 3 sourcesCVE-2026-19490CVE-2026-19489

ENISA launched the CRA Single Reporting Platform for actively exploited vulnerabilities

ENISA launched the CRA Single Reporting Platform, making EU manufacturers report actively exploited vulnerabilities and severe incidents through one portal.

ENISA switched on the Cyber Resilience Act's Single Reporting Platform on 11 September 2026, the same day CRA reporting obligations became binding on manufacturers. Reports require an early warning within 24 hours, a fuller notification within 72 hours, and a final report within 14 days (one month after notification for severe incidents). Filings go through an EU Login account with MFA, are routed to a coordinating CSIRT chosen by the manufacturer, and no API is available in the first release. Open-source software stewards fall under the same obligations from 11 December 2027.

Help Net Security·Sep 14, 12:23 UTC · 2d agoPolicy & legal

Server-Side Request Forgery (SSRF)

Fortinet discloses a low-severity SSRF in the FortiSIEM GUI allowing authenticated attackers to send requests from targeted devices.

Fortinet PSIRT advisory FG-IR-26-159, revised 2026-08-12, describes a server-side request forgery (CWE-918) in the FortiSIEM GUI, scored CVSSv3 3.4. An authenticated attacker can send HTTP requests originating from the targeted device via specially crafted requests, potentially enabling internal network probing. No CVE identifier or exploitation status is included in the advisory text.

Fortinet PSIRT·Aug 12, 07:00 UTC · Aug 12, 2026Advisory

Cybersecurity jobs available right now: January 20, 2026

Help Net Security·Aug 6, 12:24 UTC · Aug 6, 2026Vulnerability

VU#431093: TCG TPM 2.0 reference code found vulnerable to information leakage and timing side-channel attacks

CERT/CC discloses two TPM 2.0 reference code flaws allowing RSA key decryption and forged TPM attestations via crafted commands.

CERT/CC published VU#431093 covering two vulnerabilities in the TCG TPM 2.0 reference implementation: CVE-2026-6726 (information leakage via falsified TPM keys) and CVE-2026-6727 (timing side-channel in RSA OAEP decryption). An attacker with privileged access to a TPM command interface could send crafted TPM commands to decrypt ciphertexts for affected TPM-managed RSA keys, including the RSA Endorsement Key, or obtain credentials enabling forged TPM 2.0 attestations. Remediation is tracked in TCGVRT010 and TCGVRT0011.

CERT/CC Vulnerability Notes·Aug 11, 15:12 UTC · Aug 11, 2026VulnerabilityCVE-2026-6726CVE-2026-6727

EU's Cyber Resilience Act starts the 24-hour vulnerability clock

EU Cyber Resilience Act reporting rules take effect, requiring manufacturers to disclose actively exploited vulnerabilities to ENISA within 24 hours, with fines reaching €15 million.

The Cyber Resilience Act's Article 14 mandatory reporting duties became applicable, requiring makers of products with digital elements sold in the EU — regardless of where they are based — to file an early warning within 24 hours of becoming aware of an actively exploited vulnerability, a detailed notification within 72 hours, and a final report within 14 days of releasing a fix. Reports must be submitted through ENISA's Single Reporting Platform to the designated CSIRT, and non-compliance with these core duties can trigger fines up to €15 million or 2.5 percent of annual turnover. Manufacturers must also inform affected users of available fixes without undue delay, and most remaining CRA provisions, including mandatory SBOMs and security-by-design requirements, become applicable on December 11, 2027.

The Register · Security·Sep 11, 11:34 UTC · 5d agoPolicy & legal

Cisco Fixed Critical RCE in Nexus 9000 Series Switches

Cisco patched CVE-2026-20212 (CVSS 9.8) in Silicon One-based Nexus 9000 switches, allowing unauthenticated remote root code execution via TCP ports 43210/43211.

Cisco patched CVE-2026-20212 (CVSS 9.8), a flaw in the Silicon One integration for Nexus 9000 Series switches that lets unauthenticated remote attackers execute code with root privileges. TCP ports 43210 and 43211 are exposed through the default Layer 3 VRF, and exploitation can also crash the S1HAL process, forcing device reloads. Cisco TAC discovered the flaw during a support case; PSIRT is not aware of public disclosure or malicious exploitation. Workarounds include infrastructure ACLs or blocking the exposed ports, alongside a Live Protect shield pending fixed NX-OS upgrades.

Security Affairs·Sep 3, 19:49 UTC · 12d agoVulnerabilityCVE-2026-20212

Risky Bulletin: Academics find source code overlaps between Geedge and China's Great Firewall

Academics linked Chinese vendor Geedge Networks' Tiangou Secure Gateway source code to one of the Great Firewall's three traffic filtering capabilities.

US researchers presenting at USENIX Security reconstructed Geedge Networks' Tiangou Secure Gateway firmware from over 100,000 leaked files, including Git repositories with commit history, and matched its filtering behavior to sections of China's Great Firewall. They found only 1 of 3 characterized DNS injectors matched Geedge code, noted the system relies on memory-unsafe C components and copied third-party code, and said its bugs could aid future circumvention tools. Geedge also exports censorship tools to Kazakhstan, Ethiopia, Pakistan, and Myanmar. The newsletter additionally rounds up multiple breaches.

Risky Business News·Aug 21, 02:55 UTC · 26d agoResearch2

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·Aug 19, 16:46 UTC · 28d agoVulnerabilityCVE-2026-194901

Cybersecurity jobs available right now: February 10, 2026

Help Net Security's roundup lists open cybersecurity roles at KPMG, Pentera, Google, Group-IB and others across multiple countries.

A job-board roundup featuring Cloud Security Engineer at KPMG (Israel), Cloud Security Researcher at Pentera (Israel), Cyber Defence Senior Analyst at Google (UK), and Cyber Investigation Specialist at Group-IB (UAE). Additional listings cover SOC operations, penetration testing, network architecture, OT/IT convergence and AI/ML security testing across Australia, Italy, the US, India, France, Ireland and the UAE. All listings are marked no longer accepting applications.

Help Net Security·Aug 26, 09:46 UTC · 21d agoIndustry

Hackers exploit RouterOS flaws to hijack MikroTik devices without authentication

CERT Polska confirms attackers exploit chained MikroTik RouterOS SSH flaws to hijack devices without authentication; patches released in four RouterOS versions.

CERT Polska discovered six RouterOS vulnerabilities and confirmed active attacks chaining CVE-2026-67276 (CVSS 9.2, SSH authentication bypass caused by comparing only RSA key moduli) and CVE-2026-86060 (CVSS 9.2, privilege escalation via crafted usernames), dubbed MikroTrick. A third flaw, CVE-2026-67277 (CVSS 8.8) in the bandwidth-test service, can expose kernel memory or crash devices. Shadowserver counted about 122,500 MikroTik devices with SSH exposed; attackers created a privileged 'ops' account from IP 82.192.72.4, active since September 2. Fixes shipped in RouterOS 7.25beta3, 7.24.2, 7.23.4, and 6.49.21, adding startup configuration scanning with a 'Flagged' marker for unauthorized changes.

Help Net Security·Sep 7, 00:00 UTC · 9d agoExploit / PoC in the wildCVE-2026-67276CVE-2026-86060CVE-2026-67277

Cisco Advance Notification for Publication of August 19, 2026, Security Advisories

Cisco PSIRT's advance notice previews August 19, 2026 advisories including Critical CVSS 10.0 hardening releases for Crosswork and Secure Workload.

Cisco PSIRT issued an advance notification for security advisories published August 19, 2026. The batch includes Critical-rated (CVSS 10.0) hardening releases for Cisco Crosswork and Cisco Secure Workload, a High-severity blind XML External Entity injection in BroadWorks (CVE-2026-20320, CVSS 7.5), a Medium SQL injection in Unified Intelligence Center (CVE-2026-20327, CVSS 6.5), and a RoomOS stack overflow. Full details and fixes follow in the individual advisories.

Cisco Security Advisories·Aug 19, 16:00 UTC · 28d agoAdvisoryCVE-2026-20030CVE-2026-20357CVE-2026-20358+8 CVEs

Cops, CrowdStrike disrupt Sality botnet by poisoning the network and diverting into sinkholes

Law enforcement and CrowdStrike disrupted the 23-year-old Sality P2P botnet, isolating 15,000+ infected machines and seizing linked domains.

International law enforcement, working with CrowdStrike and the Shadowserver Foundation, executed a peer-to-peer sinkhole operation against Sality, a botnet active since 2003 that delivered malware to more than 15,000 machines worldwide. Sality's primary payload for eight years was EggJagger, a clipboard hijacker that swaps copied bitcoin and ethereum wallet addresses with attacker-controlled ones, yielding at least $150,000 in stolen cryptocurrency. The US Justice Department, FBI, and DoD Office of Inspector General's Defense Criminal Investigative Service seized Sality-linked domains, with parallel action in Bulgaria, Hungary, and Romania. The Shadowserver Foundation is coordinating with ISPs and CSIRTs to identify infections and notify victims.

The Register · Security·Sep 1, 23:54 UTC · 14d agoMalware in the wild

Accountability in Certificate Transparency and Variants

Formal Dolev-Yao analysis shows plain Certificate Transparency requires an honest log, SCT Auditing removes that assumption, and Gossiping does not.

The paper analyzes accountability in Certificate Transparency and its SCT Auditing and Gossiping extensions in the Dolev-Yao model, starting from a vanilla PKI. It finds plain CT provides accountability only under the assumption of an honest log. The SCT Auditing extension can eliminate that assumption, while the Gossiping extension cannot. CT is supported by all major browsers and obliges Certificate Authorities to record issued certificates in public, monitored logs.

arXiv cs.CR·Sep 10, 13:45 UTC · 6d agoResearch

Stately Taurus Activity in Southeast Asia Links to Bookworm Malware

Unit 42 links Stately Taurus APT activity in ASEAN region and Myanmar to the decade-old Bookworm malware family via infrastructure overlaps.

Unit 42 connected Stately Taurus (aka Mustang Panda) espionage activity targeting ASEAN-affiliated organizations and Myanmar to the Bookworm malware family, first published in 2015. Earlier attacks delivered the PubLoad stager via DLL sideloading, with a PubLoad variant communicating with C2 at 123.253.32[.]15 while mimicking Windows Update URLs. Three previously unreported loader samples from 2021-2022 used UUID-decoded shellcode loaded via heap allocation and API callbacks, ultimately decrypting and loading Bookworm DLLs. A ToneShell backdoor variant shared debug paths with Bookworm loaders, and the January 2024 CSIRT CTI post corroborated the Myanmar attacks.

Palo Alto Unit 42·Aug 17, 10:54 UTC · Aug 17, 2026Threat actor in the wild

International Operation Disrupts Sality P2P Botnet

US-led international operation with Europol, CrowdStrike, and Shadowserver sinkholed the 20-year-old Sality P2P botnet, once exceeding one million infected machines.

On August 31, 2026, authorities from the US, Bulgaria, Hungary, and Romania, supported by Europol, CrowdStrike, and the Shadowserver Foundation, disrupted the Sality P2P botnet by sinkholing communications and seizing domains. Sality has operated for over 20 years, at its peak controlling more than one million infected machines used for credential theft, spam, proxy services, crypto-theft, and DDoS attacks, with over 11 million unique IP addresses linked to its infrastructure since 2017. The disruption exploited the botnet's super-peer reputation mechanism by removing legitimate peers via protocol-level manipulation and inserting sinkhole entries into emptied peer lists.

Infosecurity Magazine·Sep 3, 08:30 UTC · 13d agoMalware

Cisco Advance Notification for Publication of September 2, 2026, Security Advisories

Cisco PSIRT published September 2, 2026 advisories including critical IOS XR hardening fixes and a Nexus 9000 remote code execution flaw.

Cisco's PSIRT released its September 2, 2026 batch of security advisories, including a Cisco IOS XR Software security hardening release bundling six CVEs (CVE-2026-20274 through CVE-2026-20280) rated critical with CVSS 9.8. A separate critical (CVSS 9.8) remote code execution vulnerability, CVE-2026-20212, affects Nexus 9000 Series switches with Silicon One, and a high-severity (CVSS 7.5) denial-of-service flaw, CVE-2026-20281, affects the Desk Phone 9800 Series and related SIP phones. Administrators should review the advisories and prioritize patching the critical-rated issues.

Cisco Security Advisories·Sep 2, 16:02 UTC · 14d agoAdvisoryCVE-2026-20277CVE-2026-20278CVE-2026-20280+6 CVEs

Pyramid Solutions NetStaX EtherNet/IP Stack

CISA flags critical CVE-2026-78012 (CVSS 9.8) stack buffer overflow in Pyramid Solutions NetStaX EtherNet/IP stacks below v5.6.1, risking crashes or remote attack vectors.

CISA republished Pyramid Solutions' advisory for CVE-2026-78012, a CWE-121 stack-based buffer overflow in the NetStaX EtherNet/IP stack versions prior to 5.6.1, scored CVSS 9.8. Large Class 3 explicit-message requests can exceed the application-side receive buffer without generating a CIP error, potentially causing memory corruption, device crashes, or a silent remote attack vector. All eight adapter and scanner DLL/development kit variants, including CIP Security editions, are affected across critical manufacturing, energy, water, and chemical sectors. No public exploitation has been reported.

CISA Advisories·Sep 3, 12:00 UTC · 13d agoAdvisoryCVE-2026-78012

Researchers Use Claude to Port Pre-Auth RCE Exploit From One PLC Model to Another

Forescout used Anthropic's Claude to port a working pre-auth RCE exploit for CVE-2021-31886 between WAGO PLCs, executing ARM shellcode on live hardware.

Forescout Vedere Labs used Claude interactively to port an RCE exploit for CVE-2021-31886, a CVSS 9.8 stack buffer overflow in the Nucleus FTP server's USER command, from a WAGO 750-852 to a WAGO 750-831 PLC, running attacker-supplied ARM shellcode. The final RCE stage cost $535.74 in API usage over 8 hours 32 minutes, and a follow-up attempt to build a C2 implant permanently bricked the device. CERT@VDE lists many Nucleus V1-based WAGO models as vulnerable with no updates available; Siemens plans no Nucleus NET remediation. The work follows a joint NSA/CISA/FBI/DOE/EPA advisory warning of AI-generated exploitation scripts targeting internet-exposed Siemens S7 PLCs.

The Hacker News·Sep 2, 07:47 UTC · 14d agoResearchCVE-2021-318862

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·Aug 21, 00:00 UTC · 26d agoVulnerabilityCVE-2026-19490CVE-2026-19489

ZDI-26-593: NVIDIA TensorRT ONNX File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI disclosed a second TensorRT heap-based buffer overflow RCE (CVE-2026-24268, CVSS 7.8) in ONNX file parsing, requiring user interaction.

The Zero Day Initiative published advisory ZDI-26-593 covering another heap-based buffer overflow in NVIDIA TensorRT's ONNX file parsing. A remote attacker can execute arbitrary code if the target opens a malicious file or visits a crafted page. ZDI rated the vulnerability CVSS 7.8 and assigned CVE-2026-24268.

ZDI Published Advisories·Aug 24, 05:00 UTC · 23d agoAdvisoryCVE-2026-24268

$536 and 8 Hours: AI Learns to Attack a Different PLC

Forescout used Claude to port a WAGO PLC exploit for $536 in 8 hours, and an AI-generated payload later permanently bricked the test device.

Forescout researchers used Claude Code with Ghidra, terminal access, and physical hardware to port CVE-2021-31886, a pre-authentication buffer overflow in the Nucleus FTP server, from a WAGO 750-852 PLC to the WAGO 750-831 without source code or debugger access. The final RCE development stage cost $535.74 in API fees over an 8-hour, 32-minute session (2.6k input and 1.3M output tokens) and required heavy researcher guidance. Claude produced working ICMP and UDP beacon exploits in 12 minutes after identifying that normal FTP command completion was overwriting its shellcode, fixed by omitting the CRLF terminator. A follow-up session extending the payloads toward a C2 implant wrote to flash-mapped memory and permanently bricked the PLC, underscoring the risks of autonomous agents operating against physical infrastructure.

Security Affairs·Sep 2, 13:50 UTC · 14d agoResearchCVE-2021-318861

ZDI-26-592: NVIDIA TensorRT ONNX File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability

NVIDIA TensorRT improper array index validation in ONNX parsing (CVE-2026-24238, CVSS 7.8) enables remote code execution.

ZDI-26-592 addresses improper validation of array index in NVIDIA TensorRT's ONNX file parsing, tracked as CVE-2026-24238 with CVSS 7.8. Exploitation permits remote code execution on affected installations and requires user interaction. The advisory was published by the Zero Day Initiative on August 24, 2026.

ZDI Published Advisories·Aug 24, 05:00 UTC · 23d agoAdvisoryCVE-2026-24238

Critical Flaw in NASA/JPL Open-Source Spacecraft Command Software Allowed Unauthenticated Command Execution

NASA/JPL's AIT-GUI web console (CVSS 9.4) lacked authentication and CSRF protection, letting anyone send unauthenticated commands to spacecraft instruments; fixed in 2.5.2.

Cycode researchers found that AIT-GUI, the browser console of NASA/JPL's open-source AMMOS Instrument Toolkit, ran an HTTP server with no authentication, no session checks, and no CSRF protection on state-changing endpoints, allowing arbitrary commands to spacecraft instruments. The issue combines four weaknesses: binding to 0.0.0.0 regardless of configured host, missing authentication, missing CSRF defense, and path traversal in the /seq and /script/run endpoints. Tracked as GHSA-p9r8-2q67-fp86 with CVSS 9.4, it is fixed in AIT-GUI 2.5.2. The findings came from AI-assisted code analysis confirmed with working proofs-of-concept, including a headless-browser CSRF demonstration.

Security Affairs·Aug 22, 08:04 UTC · 25d agoVulnerability1

Critical Cisco FMC Flaws Actively Exploited to Gain Root Access and Deploy Malware

Threat actors actively exploit Cisco FMC CVE-2026-20079 (CVSS 10.0) for root access, with clusters linked to Sandworm and Qilin ransomware.

Cisco Talos warns of active exploitation of CVE-2026-20079, a CVSS 10.0 authentication bypass in Cisco Secure Firewall Management Center allowing unauthenticated root-level code execution, and CVE-2026-20316 (CVSS 5.3), which permits login via a low-privileged static account for privilege escalation. Hotfixes are available now, with a broader hardening release planned for the week of September 14. Three post-compromise activity clusters were identified: UAT-12197 deployed a home.jsp web shell and cmd.jar command executor; UAT-11823, attributed with high confidence to a Sandworm-linked APT, deployed a Netcat reverse shell and Cyclops Blink; and UAT-11988 showed Qilin ransomware tactics including Active Directory enumeration and credential theft before deploying Qilin ransomware.

GBHackers·updated Sep 14, 09:27 UTC · 2d ago·first Sep 11, 05:30 UTC · 5d agoExploit / PoC in the wild 11 sourcesCVE-2026-20079CVE-2026-20316

Exploits in the Wild for Citrix ADC and Citrix Gateway Directory Traversal Vulnerability CVE-2019

Unit 42 confirmed in-the-wild exploitation of CVE-2019-19781, a critical Citrix ADC/Gateway directory traversal flaw enabling unauthenticated file access and RCE.

CVE-2019-19781, a CVSS 9.8 directory traversal vulnerability, affects all supported versions of Citrix ADC and Citrix Gateway. Unit 42 captured multiple exploitation attempts in the wild and identified scanning activity from roughly 700 Shodan-exposed hosts. The flaw stems from improper pathname handling in Apache, allowing unauthenticated attackers to read sensitive files like smb.conf or achieve remote code execution via crafted XML. Palo Alto Networks released Threat Prevention signatures 57497 and 57570 on January 7, 2020, while Citrix published advisories CTX267027 and CTX267679 with responder policy mitigations pending a late-January patch.

Palo Alto Unit 42·Aug 17, 13:07 UTC · Aug 17, 2026Exploit / PoC in the wildCVE-2019-19781

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·Sep 9, 16:08 UTC · 7d agoExploit / PoC in the wild 2 sourcesCVE-2026-20079CVE-2026-20316

You’re Back In The Room (Citrix NetScaler Pre-Auth RCE CVE-2026-8452(?))

watchTowr Labs details a pre-authentication remote code execution flaw, tracked as CVE-2026-8452, in Citrix NetScaler appliances.

watchTowr Labs published technical analysis of a pre-authentication remote code execution vulnerability in Citrix NetScaler, tentatively assigned CVE-2026-8452. The CVE identifier is marked as provisional in the write-up. No confirmation of in-the-wild exploitation is provided in the available text.

watchTowr Labs·Aug 14, 07:08 UTC · Aug 14, 2026Exploit / PoCCVE-2026-8452

ZTNA Portal Improper Certificate Validation

Fortinet fixed an improper certificate validation flaw (CVSS 7.3) in FortiOS and FortiProxy Agentless ZTNA portal enabling unauthenticated man-in-the-middle attacks on backend traffic.

Fortinet advisory FG-IR-26-174 discloses an improper certificate validation vulnerability (CWE-295) in the FortiOS and FortiProxy Agentless ZTNA portal, rated CVSSv3 7.3. A remote and unauthenticated attacker can perform a man-in-the-middle attack on the communication channel between the ZTNA portal and the backend destination website. The advisory was revised on 2026-09-08.

Fortinet PSIRT·Sep 8, 07:00 UTC · 8d agoAdvisory

ZDI-26-591: NVIDIA TensorRT ONNX File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI disclosed a heap-based buffer overflow RCE (CVE-2026-24272, CVSS 7.8) in NVIDIA TensorRT ONNX parsing, requiring user interaction to exploit.

The Zero Day Initiative published advisory ZDI-26-591 covering a heap-based buffer overflow in NVIDIA TensorRT's ONNX file parsing. Successful exploitation allows remote code execution when a user opens a malicious ONNX file or visits a crafted page. ZDI rated the vulnerability CVSS 7.8 and assigned CVE-2026-24272.

ZDI Published Advisories·Aug 24, 05:00 UTC · 23d agoAdvisoryCVE-2026-24272

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 Security·Aug 26, 18:27 UTC · 21d agoExploit / PoC in the wildCVE-2026-8451CVE-2026-8452

Broken Access control on Websocket streams

Fortinet FortiSOAR access control flaw (CVSS 4.9) lets zero-permission authenticated attackers subscribe to and inject broadcast messages into websocket streams.

Fortinet advisory FG-IR-26-164 discloses an improper access control vulnerability (CWE-284, CVSSv3 4.9) in FortiSOAR. An authenticated attacker with zero permissions can subscribe to websocket streams and topics and inject broadcast messages via crafted websocket requests. The advisory was revised on 2026-09-08.

Fortinet PSIRT·Sep 8, 07:00 UTC · 8d agoAdvisory

Cisco Advance Notification for Publication of September 16, 2026, Security Advisories

Cisco will publish security advisories with fixed software on September 16, 2026, covering BroadWorks, ISE, Nexus Dashboard, ASA, FMC, FTD and ThousandEyes.

Cisco PSIRT announced advance notification for security advisories to be published on September 16, 2026, along with fixed software releases. Affected products include BroadWorks CommPilot Application Software, Identity Services Engine (ISE), Nexus Dashboard, Secure Firewall ASA, Secure Firewall Management Center (FMC), Secure Firewall Threat Defense (FTD), and ThousandEyes Virtual Appliance. ISE, Nexus Dashboard and the Secure Firewall products receive security hardening releases, and the ASA, FMC and FTD advisories will be included in the same combined release.

Cisco Security Advisories·Sep 9, 16:00 UTC · 7d agoAdvisory