Search: “Cisco”

Cisco FMC bugs exploited by nation-state and ransomware actors (CVE-2026-20079, CVE-2026-20316)

Cisco Talos confirms nation-state (Sandworm) and ransomware (Qilin) actors actively exploit CVE-2026-20079 and CVE-2026-20316 in Secure Firewall Management Center.

CVE-2026-20079 is a critical unauthenticated authentication bypass in the FMC web interface allowing root-level script and command execution via crafted HTTP requests; CVE-2026-20316 stems from static hard-coded credentials enabling unauthenticated logins. Cisco Talos detailed three intrusion clusters: web shell and JAR deployment for credential theft, a Sandworm-attributed reverse shell and credential-harvesting implant, and a suspected Qilin ransomware operator chain. Cisco urges immediate hotfixes ahead of a comprehensive hardening release the week of September 16, or taking the FMC management interface offline.

Help Net Security·updated Sep 14, 09:27 UTC · 2d ago·first Sep 10, 11:22 UTC · 6d agoExploit / PoC in the wild 11 sourcesCVE-2026-20079CVE-2026-20316

Cisco searched for IOS XR bugs and found so many it rolled them into an update release

Cisco patched three critical flaws, including CVE-2026-20212 unauthenticated remote root code execution in Nexus 9000 switches; no exploitation observed yet.

Cisco disclosed three critical-rated flaws found during a comprehensive internal security review. CVE-2026-20274 and CVE-2026-20279, both CVSS 9.8, affect the IOS XR carrier-grade operating system and are fixed in newly released versions. CVE-2026-20212 lets unauthenticated remote attackers execute code with root privileges on some Nexus 9000 Series Switches by reaching TCP ports 43210 and 43211 in the default Layer 3 VRF; no software fix exists yet, only infrastructure ACL mitigations. Cisco says it has not observed attacks against these flaws.

The Register · Security·Sep 4, 02:18 UTC · 12d agoVulnerabilityCVE-2026-20274CVE-2026-20279CVE-2026-20212

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

Root RCE Zero-Day in Cisco Secure Email Gateway Under Active Exploitation

Cisco warns CVE-2026-76461 (CVSS 9.8), an unauthenticated root RCE in Secure Email Gateway AsyncOS, is actively exploited in the wild.

Cisco confirmed that CVE-2026-76461, a CVSS 9.8 email-parsing flaw in Secure Email Gateway AsyncOS, is being exploited in the wild since September 2026, allowing unauthenticated remote attackers to execute arbitrary commands with root privileges via crafted emails containing malicious SQL statements. All physical and virtual SEG configurations are affected; Secure Email and Web Manager and Secure Web Appliance are not. CISA added the flaw to the KEV catalog with a September 17 federal remediation deadline, and Cisco released IoCs while noting root access lets attackers remove them.

SecurityWeek·updated 13:57 UTC · 5h ago·first Sep 15, 05:18 UTC · 1d agoExploit / PoC in the wild 17 sourcesCVE-2026-76461CVE-2025-20393CVE-2026-20079+1 CVEs2

Cisco Identity Services Engine Hardening Release: September 2026

Cisco ISE hardening release fixes multiple internally discovered vulnerabilities, including an authentication bypass known to be actively exploited.

Cisco released September 2026 hardening updates for Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) following a comprehensive internal security review that uncovered multiple vulnerabilities. One of the flaws, an ISE authentication bypass, is known to be actively exploited. Cisco grouped the issues by underlying vulnerability to help customers prioritize patching and streamline disclosure.

Cisco Security Advisories·16:00 UTC · 3h agoAdvisory in the wild 15 sources

Six Maximum

Cisco patched nine critical flaws, six rated CVSS 10.0, in Crosswork platforms and Secure Workload, none known to be exploited.

Cisco released fixes for nine critical vulnerabilities in its Crosswork platforms and Secure Workload software, discovered during an internal security review that used advanced AI models. Six flaws carry CVSS 10.0 ratings, including SQL injection CVE-2026-20030 and missing authentication CVE-2026-20357 in Crosswork, and access control CVE-2026-20315 and authentication flaws CVE-2026-20317 in Secure Workload. Fixes shipped in Crosswork 7.2.1-SP, Secure Workload 3.10.9.1, and 4.0.4.16. Cisco says no exploitation has been observed.

Security Affairs·Aug 21, 12:30 UTC · 26d agoVulnerabilityCVE-2026-20030CVE-2026-20357CVE-2026-20358+6 CVEs1

Cisco patches Secure Email Gateway zero-day exploited in attacks

Cisco patches actively exploited Secure Email Gateway zero-day CVE-2026-76461 enabling unauthenticated root command execution; CISA adds it to KEV.

Cisco disclosed that a critical zero-day (CVE-2026-76461) in the email parsing logic of AsyncOS for Secure Email Gateway is being actively exploited, allowing unauthenticated remote attackers to execute arbitrary SQL statements that lead to root-level command execution on virtual and physical appliances. CISA added the flaw to its KEV catalog and ordered federal agencies to patch within three days, by September 17. Cisco also patched four other critical SEG/SEWM vulnerabilities (CVE-2026-76440, CVE-2026-76441, CVE-2026-20353, CVE-2026-76443) with no evidence of exploitation, and shared IOCs including suspicious SQL statements in mail_logs.

BleepingComputer·Sep 15, 07:31 UTC · 1d agoExploit / PoC in the wildCVE-2026-76461CVE-2026-76440CVE-2026-76441+3 CVEs

Cisco Nexus 9000 Series Switches Silicon One Remote Code Execution Vulnerability

Cisco patches unauthenticated RCE in Nexus 9000 Silicon One switches exposed via TCP ports 43210 and 43211 in the default L3 VRF.

Cisco disclosed and patched a vulnerability in the Silicon One integration for Nexus 9000 Series switches that allows an unauthenticated remote attacker to execute code with root privileges. The flaw stems from TCP ports 43210 and 43211 being accessible in the default Layer 3 VRF. Exploitation can also crash the S1HAL process and force an affected device to reload. Cisco has released software updates, and workarounds are available to mitigate exposure.

Cisco Security Advisories·Sep 2, 16:00 UTC · 14d agoVulnerability

Cisco Patches Nine Crosswork and Secure Workload Flaws, Five Scoring CVSS 10.0

Cisco patches nine Crosswork and Secure Workload flaws, five rated CVSS 10.0, found internally with no exploitation observed.

Cisco released fixes for four Crosswork platform vulnerabilities including CVE-2026-20030 SQL injection and CVE-2026-20357 missing authentication, both scoring CVSS 10.0, affecting Crosswork Release 7.2.1 and earlier. Five additional flaws in Secure Workload, including CVE-2026-20315 and CVE-2026-20317 at CVSS 10.0, affect SaaS and on-premises deployments up to releases 3.10 and 4.0. All issues were found through internal testing and are not known to be actively exploited. The patches follow a broader internal security review that recently addressed 12 Catalyst SD-WAN and IOS XE bugs.

The Hacker News·Aug 21, 10:03 UTC · 26d agoVulnerabilityCVE-2026-20030CVE-2026-20357CVE-2026-20358+7 CVEs

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·Aug 19, 16:00 UTC · 28d agoAdvisory

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 Security·Sep 3, 13:13 UTC · 13d agoAdvisory

Cisco Patches 12 SD-WAN and IOS XE Flaws, Including Three 9.9 CVSS Score Bugs

The Hacker News·Aug 7, 06:12 UTC · Aug 7, 2026Vulnerability in the wildCVE-2026-20303CVE-2026-20304CVE-2026-20310+12 CVEs1

Cisco Packaged Contact Center Enterprise and Cisco Unified Contact Center Enterprise Server-Side Request Forgery Vulnerability

Cisco patched an authenticated SSRF flaw in Packaged CCE and Unified CCE that lets credentialed users send arbitrary network requests from affected devices.

A server-side request forgery vulnerability caused by improper input validation of specific HTTP requests affects Cisco Packaged Contact Center Enterprise and Cisco Unified Contact Center Enterprise. An authenticated, remote attacker with valid user credentials can send crafted HTTP requests to make the device issue arbitrary network requests. Cisco has released software updates; no exploitation is reported in the advisory.

Cisco Security Advisories·Aug 19, 16:00 UTC · 28d agoAdvisory

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software SSL VPN Denial of Service Vulnerability

Cisco expanded an SSL VPN denial-of-service advisory to cover all ASA and FTD software platforms; unauthenticated attackers can exhaust device memory.

A vulnerability in the VPN and management web servers of Cisco ASA Software and Cisco Secure FTD Software allows an unauthenticated remote attacker to exhaust system memory or buffer blocks, causing a denial of service. Originally scoped to the ASAv and FTDv virtual appliances, Cisco updated the advisory on September 16, 2026 to cover all ASA and FTD platforms.

Cisco Security Advisories·16:05 UTC · 3h agoAdvisory 9 sources

Cisco Secure Email Gateway and Secure Email and Web Manager Security Hardening Release: September 2026

Cisco's September 2026 hardening release for Secure Email Gateway and Secure Email and Web Manager patches internally found flaws, one actively exploited.

Cisco issued a security hardening release for Cisco Secure Email Gateway and Secure Email and Web Manager covering multiple internally discovered vulnerabilities, grouped by CWE class to streamline patching. Cisco states one of the vulnerabilities is known to be actively exploited. The exploited issue is the Cisco Secure Email Gateway SQL Injection Vulnerability detailed in a companion advisory. Software updates are available.

Cisco Security Advisories·Sep 14, 16:00 UTC · 2d agoAdvisory in the wild6

CVE-2026-20212: Cisco Nexus 9000 RCE Flaw

Cisco disclosed CVE-2026-20212, a critical unauthenticated remote code execution flaw in the Silicon One integration of Nexus 9000 switches.

Cisco has disclosed CVE-2026-20212, a critical vulnerability in the Silicon One integration used by certain Nexus 9000 switches. The flaw allows an unauthenticated remote attacker to achieve remote code execution. The source excerpt does not state active exploitation or provide patch details.

SOCRadar·Sep 4, 13:57 UTC · 12d agoVulnerabilityCVE-2026-20212

Cisco Secure Email Gateway SQL Injection Vulnerability

Unauthenticated SQL injection in Cisco Secure Email Gateway email parsing enables root command execution via crafted messages; patches released.

A vulnerability in email parsing of Cisco AsyncOS for Cisco Secure Email Gateway allows an unauthenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system. Insufficient validation in the email parsing logic lets a crafted email containing malicious SQL statements achieve arbitrary SQL execution and root command execution. Cisco has released software updates, and the companion September 2026 hardening advisory states this flaw is actively exploited.

Cisco Security Advisories·Sep 14, 16:00 UTC · 2d agoVulnerability in the wild

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerability

Cisco patched an unauthenticated remote DoS in ASA and FTD Remote Access SSL VPN that reloads devices via crafted HTTP requests.

Cisco disclosed a denial-of-service vulnerability in the Remote Access SSL VPN service of Secure Firewall ASA and FTD software. Insufficient error checking when processing HTTP requests allows an unauthenticated, remote attacker to send a crafted HTTP request that causes the affected device to reload. Cisco has released software updates addressing the flaw.

Cisco Security Advisories·Aug 11, 16:39 UTC · Aug 11, 2026Advisory

China-Linked Fire Ant Hijacks Cisco Routers to Steal Credentials and Blind Security Logs

China-nexus espionage group Fire Ant compromised Cisco IOS XR routers and TACACS servers to harvest credentials, capture traffic and suppress logs.

Sygnia investigated an intrusion in which Fire Ant expanded beyond VMware hypervisors to Cisco IOS XR routers, TACACS servers and Linux management hosts. The actor deployed purpose-built router implants that hid a GRE tunnel, filtered log messages, captured PCAPs uploaded to external FTP servers, and used TacTap to inject a library into tac_plus and steal TACACS credentials obfuscated with a single-byte XOR key of 0xEF. A Linux backdoor named BridgeAgent masqueraded as a Zabbix agent, persisted via a root systemd unit, disguised itself as /usr/bin/gnome-shell and received commands over TLS on port 443. The group also used Medusa and REPTILE rootkits, SSH backdoors and renamed binaries impersonating SentinelOne and Cybereason agents, while suppressing logs, disabling SELinux and rewriting login history. Sygnia assesses strong overlap with UNC3886 and published IoCs.

The Hacker News·Aug 31, 09:04 UTC · 16d agoThreat actor in the wild1

Cisco BroadWorks CommPilot Application Software Authorization Bypass Vulnerability

Cisco patched a BroadWorks CommPilot authorization bypass letting low-privileged authenticated users alter device configurations via crafted HTTP requests.

A vulnerability in the web-based management interface of Cisco BroadWorks CommPilot Application Software is caused by missing authorization checks. An authenticated remote attacker with low privileges can send crafted HTTP requests to alter configurations on select pages. Cisco has released software updates and no workarounds are available.

Cisco Security Advisories·16:00 UTC · 3h agoAdvisory

Cisco Secure Email Secure/Multipurpose Internet Mail Extensions Ciphertext Decryption Vulnerabilities

Cisco released an advisory for S/MIME ciphertext decryption flaws in Secure Email that could let unauthenticated remote attackers recover plaintext via machine-in-the-middle.

Multiple vulnerabilities in the S/MIME decryption functionality of Cisco Secure Email stem from insufficient validation of message integrity. An unauthenticated remote attacker could intercept and modify traffic between email gateways using a machine-in-the-middle technique to obtain plaintext from encrypted messages. No workarounds are available; no CVE identifiers or exploitation status were included in the advisory text.

Cisco Security Advisories·Sep 8, 11:22 UTC · 8d agoAdvisory

ZDI-26-581: Cisco Identity Services Engine invokeScript Command Injection Remote Code Execution Vulnerability

ZDI details CVE-2026-20147, an authenticated command injection in Cisco Identity Services Engine allowing remote code execution, rated CVSS 7.2.

ZDI-26-581 describes a command injection flaw in Cisco Identity Services Engine reachable through the invokeScript function. Remote attackers who authenticate can execute arbitrary code on affected installations. The issue is tracked as CVE-2026-20147 and carries a CVSS rating of 7.2. No exploitation activity is reported in the advisory.

ZDI Published Advisories·Aug 13, 05:00 UTC · Aug 13, 2026VulnerabilityCVE-2026-20147

Critical Cisco IMC bug gives attackers root, PoC is out (CVE-2026-20200)

Help Net Security·Aug 6, 00:00 UTC · Aug 6, 2026Exploit / PoCCVE-2026-20200CVE-2026-202721

'Sandworm' Chains Cisco Vulnerabilities to Deploy Cyclops Blink

Russia-linked Sandworm chains Cisco vulnerabilities to deploy an upgraded Cyclops Blink botnet variant the FBI disrupted in 2022.

Dark Reading reports that Sandworm, the notorious Russia-linked threat group, is chaining Cisco vulnerabilities to deploy an upgraded version of the Cyclops Blink botnet malware. The FBI previously disrupted the Cyclops Blink botnet in 2022. The activity signals renewed botnet infrastructure building by the group despite prior law-enforcement action.

Dark Reading·Sep 14, 21:37 UTC · 1d agoThreat actor in the wild

Cisco bundles fixes for multiple vulnerabilities, some critical, into one patch

Cisco patched seven IOS XR vulnerabilities, two rated CVSS 9.8, allowing unauthenticated remote code execution and root access on carrier routers; no exploitation observed.

Cisco released fixes for seven internally discovered vulnerabilities in IOS XR, its Linux-based network operating system for carrier-grade routers. Two flaws, CVE-2026-20274 and CVE-2026-20279, are rated CVSS 9.8 (critical) and involve lifetime resource control issues that can enable unauthenticated remote code execution with root access; the other five are rated 8.2-8.8 and cover buffer overflows, access control failures, and out-of-bounds access. All IOS XR releases including IOS XR7 are affected regardless of configuration, no workarounds exist, and remediation requires software maintenance upgrades (SMUs) or fixed releases 26.2.2/26.3.1. Cisco says the flaws are not known to be actively exploited, but experts urge immediate patching of internet-facing and core routing systems, citing parallels with Salt Typhoon tradecraft.

CSO Online·Sep 9, 02:22 UTC · 7d agoVulnerabilityCVE-2026-20274CVE-2026-20279

Patch Tuesday to Pentest Wednesday: How an Equipment Rental Company Is Turning Continuous Testing Into Continuous Exposure Management

An equipment rental company uses Horizon3 NodeZero for continuous exposure management, surfacing an SSH key exposure in eight hours versus annual pentesting.

The company moved from periodic penetration testing to continuous exposure management using the NodeZero Proactive Security Platform, feeding telemetry into a Splunk-based CTEM pipeline via Horizon3 APIs. NodeZero exposed SSH RSA key pairs from a PHP web server change about eight hours after introduction and found more findings in 12 hours than a third-party engagement found in roughly 30 days. An Active Directory password audit of 15,000 passwords found about 300 identical or similar compromised passwords, driving a banned-password list, 12-character minimums, service desk changes, and self-service reset rollout; users with similar passwords later dropped from 880 to 209. NodeZero also validated a suspected Cisco vulnerability as exploitable.

Horizon3.ai·Sep 9, 15:58 UTC · 7d agoIndustry

Cisco Industrial Ethernet 1000 Series Switches Denial of Service Vulnerability

Cisco released a fix for a management-plane flooding DoS in IE-1000 switches that can make the device manager, SSH, or API inaccessible.

Insufficient protection against management plane flooding in Cisco Industrial Ethernet 1000 Series Switches allows an unauthenticated remote attacker to send high-rate ICMP, SSH, or HTTP traffic, raising CPU usage and causing a denial-of-service condition on the device manager web GUI, SSH, or API. Data traffic through the device is not affected. Cisco has released software updates to address the issue.

Cisco Security Advisories·Aug 19, 16:00 UTC · 28d agoAdvisory

Hackers Abuse Google Sheets as C2 in ClickFix Attacks to Steal Cryptocurrency

Cisco Talos tracks a ClickFix crypto-theft campaign using Google Sheets as C2 to swap deposit addresses in Chrome.

Cisco Talos uncovered a cryptocurrency theft campaign that abuses Google Sheets and the Google Visualization API as a covert C2 channel, delivering obfuscated JavaScript into victims' Chrome browser sessions via ClickFix-style social engineering. Victims are lured with a fake "API Logic Flaw" report promising 25-38% bonuses on SimpleSwap and SwapZone swaps; the injected payload acts as a browser-based web skimmer that replaces deposit addresses, overrides the fetch API, and hijacks the clipboard. Later variants use the legitimate Tampermonkey extension with a user script for persistence without OS-level compromise. Talos identified 49 Bitcoin wallets, with 24 reused addresses receiving about 0.159 BTC (~$10,000) before mixing through more than 3,000 addresses.

GBHackers·Sep 9, 06:22 UTC · 7d agoPhishing & fraud in the wild

Cisco Unified Intelligence Center SQL Injection Vulnerability

Cisco patched a blind SQL injection in Unified Intelligence Center's web interface allowing authenticated local attackers to read the internal database.

Cisco disclosed a blind SQL injection vulnerability in the web-based management interface of Unified Intelligence Center, caused by insufficient validation of user-supplied input. An authenticated local attacker can send crafted requests and read the contents of the device's internal database. Exploitation requires valid user credentials, and Cisco has released software updates.

Cisco Security Advisories·Aug 19, 16:00 UTC · 28d agoAdvisory

The 12 Best Extended Detection & Response (XDR) Platforms, Compared and Priced

Buyer's guide compares 12 XDR platforms, favoring Microsoft Defender XDR, Stellar Cyber and CrowdStrike, and warns ingestion pricing inflates costs.

The article compares 12 extended detection and response platforms, distinguishing native XDR (CrowdStrike, Palo Alto Cortex XDR, Microsoft Defender XDR, SentinelOne) from open XDR (Stellar Cyber, Arctic Wolf, Rapid7). It argues data ingestion pricing, not per-endpoint fees, is the main budget risk and should be modeled before signing. It repeats the consolidation note that Sophos acquired Secureworks for approximately $859 million in February 2025, and flags that ExtraHop is NDR rather than full XDR.

GBHackers·updated Sep 9, 08:07 UTC · 7d ago·first Sep 9, 07:51 UTC · 7d agoIndustry 3 sources1

Cisco Nexus Dashboard Software Security Hardening Release: September 2026

Cisco released Nexus Dashboard hardening updates for multiple internally discovered vulnerabilities, grouped by CWE and not known to be exploited.

Cisco's Nexus Dashboard engineering team conducted an internal security review that found multiple vulnerabilities, addressed via software hardening releases. The issues were discovered during internal testing and are not known to be actively exploited. Cisco grouped the issues by CWE class and assigned a single CVE ID per issue before releasing fixes.

Cisco Security Advisories·16:00 UTC · 3h agoAdvisory

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

Cyclops Blink Evolves Into x86-64 Linux Implant With Packet Sniffing and Internal Network Scanning

Sophos uncovers a new x86-64 Cyclops Blink Linux implant with packet sniffing and internal network scanning on compromised Cisco FMC appliances.

Sophos identified a 64-bit Linux Cyclops Blink implant in August on compromised Cisco Firewall Management Center devices, persisting via SysV init scripts and masquerading as the process 'kworker01'. The modular malware runs five child processes for reconnaissance, file transfer, scanning, packet capture, and persistence, and beacons hourly over outbound TLS to hardcoded C2 89.34.96.56 on ports 43856 and 49172. The family was previously tied to Russian-linked Sandworm activity on WatchGuard appliances, though Sophos treats 2026 attribution cautiously. The packet-capture module applies configurable filters to retain credentials, cookies, and authentication tokens from raw Ethernet traffic.

Cyber Security News·Sep 14, 13:33 UTC · 2d agoMalware in the wild

CISA Adds Four Known Exploited Vulnerabilities to Catalog

CISA added four actively exploited vulnerabilities—Fortinet buffer overflow, Citrix NetScaler and Cisco auth bypasses, and a Chromium V8 write—to the KEV Catalog.

CISA added CVE-2025-25249 (Fortinet heap-based buffer overflow), CVE-2026-19490 (Citrix NetScaler authentication bypass), CVE-2026-87491 (Google Chromium V8 out-of-bounds write), and CVE-2026-20079 (Cisco Firewall Management Center authentication bypass) to its Known Exploited Vulnerabilities Catalog based on evidence of active exploitation. Under Binding Operational Directive 26-04, Federal Civilian Executive Branch agencies must prioritize rapid remediation of these high-risk vulnerabilities on exposed assets and verify whether systems were compromised before patching. CISA encourages all organizations to adopt risk-based vulnerability management and prioritize KEV Catalog remediation.

CISA Advisories·Sep 9, 12:00 UTC · 7d agoExploit / PoC in the wildCVE-2025-25249CVE-2026-19490CVE-2026-87491+1 CVEs

Cisco Secure Firewall Management Center Software sftunnel Root Arbitrary Code Execution Vulnerability

Cisco patched an sftunnel flaw in Secure Firewall Management Center letting an authenticated remote attacker execute arbitrary commands as root.

A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure Firewall Management Center allows an authenticated remote attacker to execute commands as root. The flaw stems from incorrect permissions allowing a registered sftunnel peer to write an arbitrary file anywhere on the device, exploitable via connection hijacking or crafted sftunnel commands. Cisco has released software updates.

Cisco Security Advisories·16:00 UTC · 3h agoAdvisory 6 sources

Is Cyber missing the Marque?

Cisco Talos analyzes the White House memorandum on private-sector participation in government-authorized offensive cyber operations.

A new White House memorandum addresses private sector participation in government-authorized offensive cyber operations. Cisco Talos's newsletter, introduced by new author Mick Baccio, explores the operational and security implications of this policy for the cybersecurity industry.

Cisco Talos·Aug 20, 18:00 UTC · 27d agoPolicy & legal

“Sorry, I can’t help with that”: How your guardrails might become the attacker’s best friend

Cisco Talos's David Bianco argues AI guardrail customization requires operational sovereignty so defenders retain the advantage over attackers.

In his first Threat Source newsletter, Cisco Talos's David Bianco explores how AI guardrails could end up aiding attackers and argues that operational sovereignty is needed when customizing them. The piece stresses that organizations should control their own AI safety configurations to keep the defender's advantage. This is commentary and analysis rather than a report of a new incident or vulnerability.

Cisco Talos·Aug 27, 18:00 UTC · 20d agoAI safety & security

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·Aug 20, 10:00 UTC · 27d agoThreat actor in the wild

The safety penalty: Reclaiming operational sovereignty in the age of AI

Cisco Talos argues restrictive frontier AI models impose a 'safety penalty' on security teams, urging operational sovereignty for defensive AI in incident response.

Cisco Talos published commentary arguing that increasingly restrictive frontier AI models create a 'safety penalty' that slows real-time incident response. It recommends organizations pursue operational sovereignty so defensive AI can keep pace with unconstrained adversaries.

Cisco Talos·Aug 25, 10:00 UTC · 22d agoIndustry

Curiouser and Curiouser

Cisco Talos' Threat Source newsletter reflects on the 'Make Hazel a Hacker' segment and how cybersecurity questions can have multiple correct answers.

In this edition of the Threat Source newsletter, William reflects on the 'Make Hazel a Hacker' segment from the Beers with Talos podcast. The piece discusses how cybersecurity is a field where questions can lead to multiple correct answers. It is commentary and career discussion rather than threat intelligence or research.

Cisco Talos·Aug 13, 18:00 UTC · Aug 13, 2026Industry