Threat Feed
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criticalbug_reportVulnerabilityCisco Secure Email Gateway under active exploit for file write/RCE
Cisco Secure Email Gateway (formerly IronPort). Specific vulnerable versions not disclosed in available data. Affects on-premises appliances.
criticalbug_reportVulnerabilityCisco Secure Email Gateway RCE exploited in wild; root access via AMP
Cisco Secure Email Gateway (physical and virtual) running AsyncOS 15.5 before 15.5.5-014, all 16.0 versions, and 16.5 before 16.5.0-780, with AMP File Reputation service enabled and Content Scanner Tools earlier than 25.3.0.5525.
criticalbug_reportVulnerabilityCisco Secure Email Gateway under active attack via file write RCE flaw
Cisco Secure Email Gateway (physical and virtual appliances) running AsyncOS versions prior to 15.5.5-014 or 16.5.0-780, with File Reputation service enabled and Content Scanner Tools package older than version 25.3.0.5525.
criticalbug_reportVulnerabilityCisco SEG zero-day CVE-2026-76519 exploited for root command execution
Cisco Secure Email Gateway (SEG) appliances with File Reputation service enabled and Content Scanner Tools version earlier than 25.3.0.5525. Approximately 300 instances exposed online. Cloud instances already mitigated by Cisco.
criticalbug_reportVulnerabilityFive critical RCE flaws in Cisco NX-OS allow root takeover of Nexus switches
Cisco Nexus 3000 and 9000 Series switches running NX-OS in standalone mode. Exploitation requires NX-API, Next Generation OAM (NGOAM), or MPLS OAM features to be enabled. Nexus 7000 and Nexus 9000 in ACI mode are not affected.
criticalbug_reportVulnerabilityCisco Catalyst SD-WAN Manager auth bypass under active exploitation
Cisco Catalyst SD-WAN Manager (specific versions not disclosed in source). Vulnerability allows unauthenticated remote attackers to gain administrative API access.
criticalbug_reportVulnerabilityCisco Catalyst SD-WAN Manager auth bypass exploited in the wild
Cisco Catalyst SD-WAN Manager, all vulnerable versions prior to patched releases. The vulnerability (CVE-2026-76504) affects the API authentication mechanism due to improper URI encoding handling in HTTP requests.
criticalbug_reportVulnerabilityCisco SD-WAN Manager zero-day exploited: auth bypass grants admin API access
Cisco Catalyst SD-WAN Manager, all configurations. Affected versions: all releases prior to 20.9.10.1, 20.12.8.2, 20.15.6.1, 20.18.4.1, 26.1.2.1, and 26.2.1. Releases earlier than 20.9 require migration.
criticalbug_reportVulnerabilityCisco Catalyst SD-WAN Manager zero-day exploited for admin escalation
Cisco Catalyst SD-WAN Manager (formerly SD-WAN vManage): all versions prior to 20.9.10.1, 20.12.8.2, 20.15.6.1, 20.18.4.1, 26.1.2.1, and 26.2.1. All deployments affected regardless of configuration.
highbug_reportVulnerabilityCisco ISE auth bypass zero-day exploited; AI agent RCE and browser malware
Cisco Identity Services Engine (ISE) - CVE-2026-76460 actively exploited. AI coding agents (Claude Code, OpenAI Codex, GitHub Copilot, Google Gemini CLI) vulnerable to Plugin4Shell RCE.
criticalbug_reportVulnerabilityCERT.BE warns of critical Cisco vulnerabilities requiring urgent patching
Cisco products (specific products, versions, and CVE identifiers not disclosed in available advisory text)
criticalbug_reportVulnerabilityCisco ISE max-severity auth bypass zero-day exploited in the wild
Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) versions 3.1, 3.2, 3.3, 3.4, and 3.5. CVE-2026-76460 affects all configurations due to insufficient authentication control on an API endpoint.
highbug_reportVulnerabilityCisco Secure Email Gateway SQL injection requires urgent patching
Cisco Secure Email Gateway (formerly IronPort). Specific affected versions not disclosed in available information. SQL injection vulnerability allows potential unauthorized database access.
criticalbug_reportVulnerabilityCisco Secure Email Gateway zero-day exploited; root RCE via crafted email
Cisco Secure Email Gateway (SEG) appliances running vulnerable versions of AsyncOS Software. CVE-2026-76461 affects all physical and virtual appliances regardless of configuration. Over 400 internet-exposed instances tracked by Shadowserver.
criticalbug_reportVulnerabilityCisco Secure Email Gateway CVE-2026-76461 exploited for root RCE
Cisco Secure Email Gateway (physical and virtual appliances) running AsyncOS Software versions 15.5 and earlier, 16.0, and 16.5. All device configurations are vulnerable. Cisco Secure Email and Web Manager and Secure Web Appliance are not affected.
criticalbug_reportVulnerabilityCisco FMC auth bypass exploited by ransomware and state actors
Cisco Secure Firewall Management Center (FMC) software. CVE-2026-20079 (CVSS 10.0) allows unauthenticated remote authentication bypass and root access. CVE-2026-20316 (CVSS 5.3) enables low-privilege login for sensitive data access.
criticalbug_reportVulnerabilityCisco FMC flaws exploited by ransomware and state-sponsored actors
Cisco Secure Firewall Management Center (FMC) - all versions vulnerable to CVE-2026-20079 (CVSS 10.0, authentication bypass) and CVE-2026-20316 (CVSS 5.3, static credentials). Widely deployed security appliance used for managing Cisco firewalls.
criticalbug_reportVulnerabilityCISA flags 3 exploited flaws in Cisco FMC, Citrix NetScaler, Fortinet
CVE-2026-20079: Cisco Secure Firewall Management Center (FMC) Software (CVSS 10.0). CVE-2026-19490: Citrix NetScaler ADC and NetScaler Gateway configured as AAA virtual server or Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) (CVSS 9.3).
criticalbug_reportVulnerabilityCisco Secure FMC auth bypass CVE-2026-20079 actively exploited
Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control Firewall Management. All unpatched versions vulnerable. Cloud-hosted Security Cloud Control already patched by Cisco.
criticalbug_reportVulnerabilityCisco patches critical RCE in Nexus 9000 switches and 7 IOS XR flaws
Cisco Silicon One-based Nexus 9000 switches (10 models including N9324C-SE1U, N9348Y2C6D-SE1U, N9364E-SG2-O/Q, N9396T12C-SE1, N9348Y12C-SE1, N9396Y12C-SE1, N9336C-SE1, N9K-C9804, N9K-C9808) running NX-OS 10.3(1) through 10.6(3s).
criticalbug_reportVulnerabilityCisco NX-OS RCE vulnerability requires immediate patching
Cisco NX-OS operating system. Specific affected versions not disclosed in available information. Impacts Nexus switches and potentially other devices running NX-OS.
highperson_alertThreat ActorFire Ant compromises Cisco routers for network surveillance
Fire Ant is a Chinese espionage-focused threat actor attributed by Sygnia, with operational overlap to UNC3886 (previously documented by Google). The group targets critical infrastructure and high-value networks through a "target behind the target" s…
highperson_alertThreat ActorFire Ant Expands Espionage to Cisco Routers and TACACS Servers
Fire Ant is a China-linked cyber espionage actor that has conducted long-running campaigns targeting network infrastructure and virtualization platforms.
criticalbug_reportVulnerabilityCisco patches nine flaws in Crosswork and Secure Workload; five rated 10.0
Cisco Crosswork Data Gateway, Crosswork Network Controller, Crosswork Planning (Release 7.2.1 and earlier); Cisco Secure Workload SaaS and on-premises (Release 3.10 and earlier, Release 4.0).
criticalbug_reportVulnerabilityCisco Secure Firewall DoS flaw under active exploitation
Cisco Secure Firewall products (specific versions not disclosed in available data). Organizations using Cisco ASA, FTD, or Firepower appliances should assume exposure until vendor advisory is reviewed.
highbug_reportVulnerabilityCisco ASA/FTD remote DoS flaw exploited in wild, CISA orders patch by Aug 14
Cisco Secure Firewall ASA Software (versions 9.16.1, 9.18.1, 9.20, 9.22, 9.23, 9.24) and FTD Software (versions 7.0, 7.2, 7.4, 7.6, 7.7, 10.0) with IKEv2 Remote Access VPN, SSL-VPN, or Zero Trust Network Access enabled.
highbug_reportVulnerabilityCisco ASA/FTD VPN flaw CVE-2026-20349 actively exploited for DoS
Cisco Secure Firewall ASA (versions 9.16, 9.18, 9.20, 9.22, 9.23, 9.24) and Threat Defense FTD (versions 7.0, 7.2, 7.4, 7.6, 7.7, 10.0) with Remote Access SSL VPN, IKEv2 Remote Access VPN with client services, or Zero Trust Network Access enabled.
criticalbug_reportVulnerabilityCisco patches 12 critical SD-WAN and IOS XE flaws, three rated 9.8+
Cisco Catalyst SD-WAN Software (all versions prior to 20.9, versions 20.9–26.1); Cisco IOS XE Software versions 17.9–26.1 running in autonomous or controller mode; Cisco Integrated Management Controller (IMC) web interface.
criticalbug_reportVulnerabilityCritical Cisco Catalyst SD-WAN flaws require immediate patching
Cisco Catalyst SD-WAN Software (specific versions not disclosed in advisory). Scope: SD-WAN infrastructure components used for enterprise WAN connectivity and management.
highbug_reportVulnerabilityCisco IOS/IOS XE vulnerabilities require immediate patching per CERT.BE
Cisco IOS and IOS XE platforms. Specific affected versions not provided in advisory. Multiple vulnerabilities of high severity impact network infrastructure devices including routers and switches running these operating systems.