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Cisco — Vulnerabilities & Security Advisories 3365

Browse all 3365 CVE security advisories affecting Cisco. AI-powered Chinese analysis, POCs, and references for each vulnerability.

Cisco Systems operates as a global leader in networking hardware, software, and telecommunications services, providing critical infrastructure for enterprise connectivity and cloud security. With over 3,000 recorded CVEs, the company’s attack surface is extensive, reflecting the complexity of its diverse product portfolio. Historically, vulnerabilities frequently involve remote code execution (RCE), cross-site scripting (XSS), and privilege escalation flaws, often stemming from legacy protocols or complex configuration interfaces. Notable incidents include the 2023 supply chain compromise affecting the Cisco AnyConnect Secure Mobility Client, which allowed attackers to bypass authentication mechanisms. These breaches highlight risks associated with widely deployed endpoint security agents. The sheer volume of disclosed issues underscores the challenges inherent in maintaining security across such a vast ecosystem of interconnected devices and software solutions, requiring rigorous patch management and continuous monitoring to mitigate potential exploitation by threat actors targeting critical network infrastructure.

Top products by Cisco: Cisco Small Business RV Series Router Firmware Cisco IOS XE Software Cisco Identity Services Engine Software Cisco Adaptive Security Appliance (ASA) Software Cisco Firepower Management Center Cisco IOS XR Software Cisco Firepower Threat Defense Software Cisco NX-OS Software Cisco Data Center Network Manager Cisco SD-WAN vManage Cisco SD-WAN Solution Cisco Webex Meetings Cisco Unified Communications Manager Cisco Secure Firewall Adaptive Security Appliance (ASA) Software Cisco Prime Infrastructure Cisco Enterprise NFV Infrastructure Software IOS Cisco IOS Cisco Catalyst SD-WAN Manager Cisco WebEx WRF Player Cisco Digital Network Architecture Center (DNA Center) Cisco Email Security Appliance (ESA) Cisco Aironet Access Point Software Cisco RoomOS Software Cisco Unified Contact Center Express Cisco Unified Computing System (Managed) Cisco Secure Email Cisco Nexus Dashboard Cisco Application Policy Infrastructure Controller (APIC) Cisco Unity Connection
CVE ID Title CVSS Severity Published
CVE-2026-20323 Cisco Secure Firewall Management Center and Secure Firewall Threat Defense Software sftunnel Unauthorized Authentication Bypass Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-295 8.3 High 2026-09-16
CVE-2026-20283 Cisco Identity Services Engine IPSec Open API Command Injection Vulnerability — Cisco Identity Services Engine Software CWE-78 6.5 Medium 2026-09-16
CVE-2026-76412 Cisco Secure Firewall Management Center Software Authenticated Privilege Escalation to Root Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-264 8.5 High 2026-09-16
CVE-2026-20333 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Incorrect Comparison Vulnerabilities — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-697 8.8 High 2026-09-16
CVE-2026-76425 Cisco ISE SQL Injection Vulnerability — Cisco Identity Services Engine Software CWE-89 7.6 High 2026-09-16
CVE-2026-20334 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Coding Standards Vulnerabilities — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-710 8.4 High 2026-09-16
CVE-2026-20284 Cisco Identity Search Engine SXP REST API SQL Injection Vulnerability — Cisco Identity Services Engine Software CWE-943 9.1 Critical 2026-09-16
CVE-2026-76424 Cisco ISE Arbitrary File Access Vulnerability — Cisco Identity Services Engine Software CWE-23 7.2 High 2026-09-16
CVE-2026-20332 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Improper Access Control Vulnerabilities — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-284 9.9 Critical 2026-09-16
CVE-2026-20344 Cisco Secure Firewall Management Center Software SQL Injection Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-89 8.8 High 2026-09-16
CVE-2026-20154 Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software Logging Denial of Service — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-835 8.6 High 2026-09-16
CVE-2026-20360 Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Information Exposure & Insecure Handling — Cisco Nexus Dashboard CWE-200 8.8 High 2026-09-16
CVE-2026-20343 Cisco Secure Firewall Management Center Software Information Disclosure and Disk Denial of Service Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-306 7.5 High 2026-09-16
CVE-2026-20222 Cisco Secure Adaptive Security Appliance Software and Secure Firewall Threat Defense Software EIGRP Denial of Service Vulnerability — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-401 7.4 High 2026-09-16
CVE-2026-20247 Cisco Identity Services Engine Unauthenticated SQL Injection Vulnerability — Cisco Identity Services Engine Software CWE-89 7.5 High 2026-09-16
CVE-2026-20135 Cisco Secure Firewall Threat Defense Software TLS 1.3 Denial of Service Vulnerability — Cisco Secure Firewall Threat Defense (FTD) Software CWE-415 8.6 High 2026-09-16
CVE-2026-76460 Cisco Identity Services Engine Authentication Bypass Vulnerability — Cisco Identity Services Engine Software CWE-648 10.0 Critical 2026-09-16
CVE-2026-20352 Cisco Identity Services Engine RADIUS Denial of Service Vulnerability — Cisco Identity Services Engine Software CWE-119 8.6 High 2026-09-16
CVE-2026-76413 Cisco Secure Firewall Management Center Software Single Sign-On Token Forgery of Administrator Account Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-1259 8.2 High 2026-09-16
CVE-2026-20336 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Resource Lifetime Management Vulnerabilities — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-664 8.8 High 2026-09-16
CVE-2026-20249 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software IKEv2 Certificate Authentication Denial of Service Vulnerability — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-704 8.6 High 2026-09-16
CVE-2026-20350 Cisco ThousandEyes Virtual Appliance Authenticated Web Interface Command Injection Vulnerability — Cisco ThousandEyes Enterprise Agent CWE-78 4.7 Medium 2026-09-16
CVE-2026-20340 Cisco Secure Firewall Management Center Software Deserialization Arbitrary Root Command Execution Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-502 8.8 High 2026-09-16
CVE-2026-76409 Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Improper Limitation of a Pathname — Cisco Nexus Dashboard CWE-22 8.8 High 2026-09-16
CVE-2026-20335 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Incorrect Calculation Vulnerabilities — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-682 8.1 High 2026-09-16
CVE-2026-20250 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software for Firepower 3100 and 4200 Series DTLS Denial of Service Vulnerability — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-772 8.6 High 2026-09-16
CVE-2026-20295 Cisco Secure Firewall Management Center and Secure Firewall Threat Defense Software sftunnel Memory Exhaustion Denial of Service Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-789 8.6 High 2026-09-16
CVE-2026-20176 Cisco Identity Services Engine Remote Code Execution Vulnerability — Cisco Identity Services Engine Software CWE-77 9.1 Critical 2026-09-16
CVE-2026-20341 Cisco Secure Firewall Management Center Software sftunnel Deserialization Root Command Execution Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-502 9.1 Critical 2026-09-16
CVE-2026-20242 Cisco Secure Firewall Management Center Software Java Deserialization Remote Code Execution Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-502 9.8 Critical 2026-09-16

This page lists every published CVE security advisory associated with Cisco. Each entry links to a detailed page with CVSS scoring, CWE classification, affected products and references. AI-generated Chinese analysis is provided for fast triage.