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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.

CVE ID Title CVSS Severity Published
CVE-2026-20237 Cisco Identity Services Engine Hardening Release - Input Validation Vulnerabilities — Cisco Identity Services Engine Software CWE-20 9.1 Critical 2026-09-16
CVE-2026-76423 Cisco ISE API Authentication Bypass Vulnerability — Cisco Identity Services Engine Software CWE-290 10.0 Critical 2026-09-16
CVE-2026-20130 Cisco Identity Services Engine Hardening Release - Improper Neutralization Vulnerabilities — Cisco Identity Services Engine Software CWE-74 10.0 Critical 2026-09-16
CVE-2026-20361 Cisco Nexus Dashboard Software Security Hardening Release September 2026 - SQL Injection — Cisco Nexus Dashboard CWE-89 8.8 High 2026-09-16
CVE-2026-20192 Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities — Cisco Identity Services Engine Software CWE-284 10.0 Critical 2026-09-16
CVE-2026-20324 Cisco Secure Firewall Management Center sftunnel Root Arbitrary Code Exectution Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-862 9.9 Critical 2026-09-16
CVE-2026-20325 Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Improper Neutralization of Special Elements used in a Command — Cisco Nexus Dashboard CWE-77 9.9 Critical 2026-09-16
CVE-2026-20194 Cisco Identity Services Engine Hardening Release - Incorrect Resource Transfer Vulnerabilities — Cisco Identity Services Engine Software CWE-669 9.1 Critical 2026-09-16
CVE-2026-20211 Cisco Identity Services Engine Remote Code Execution Vulnerability — Cisco Identity Services Engine Software CWE-502 9.1 Critical 2026-09-16
CVE-2026-20330 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Improper Neutralization Vulnerabilities — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-707 9.9 Critical 2026-09-16
CVE-2026-20322 Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Improper Access Control — Cisco Nexus Dashboard CWE-284 9.9 Critical 2026-09-16
CVE-2026-20329 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Exceptional Conditions Handling Vulnerabilities — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-703 9.9 Critical 2026-09-16
CVE-2026-20326 Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Missing Authentication for Critical Function — Cisco Nexus Dashboard CWE-306 9.8 Critical 2026-09-16
CVE-2026-20234 Cisco Identity Services Engine Hardening Release - Insuffiencently Protected Credential Vulnerabilities — Cisco Identity Services Engine Software CWE-522 9.9 Critical 2026-09-16
CVE-2026-20331 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Protection Mechanism Failure Vulnerabilities — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CWE-693 9.6 Critical 2026-09-16
CVE-2026-76420 Cisco Secure Firewall Management Center Software Impersonated sftunnel Connection Vulnerability — Cisco Secure Firewall Management Center (FMC) CWE-285 9.0 Critical 2026-09-16
CVE-2026-20307 Cisco Identity Services Engine Remote Code Execution Vulnerability — Cisco Identity Services Engine Software CWE-502 9.9 Critical 2026-09-16
CVE-2026-20305 Cisco Identity Services Engine Command Injection Vulnerability — Cisco Identity Services Engine Software CWE-78 9.1 Critical 2026-09-16
CVE-2026-20306 Cisco Identity Services Engine Command Injection Vulnerability — Cisco Identity Services Engine Software CWE-78 9.1 Critical 2026-09-16
CVE-2026-76442 Cisco Secure Email Gateway Security Hardening Release — Cisco Secure Email CWE-1284 7.5 High 2026-09-14
CVE-2026-76461 Cisco Secure Email Gateway SQL Injection Vulnerability — Cisco Secure Email CWE-89 9.8 Critical 2026-09-14
CVE-2026-76443 Cisco Secure Email Gateway Security Hardening Release — Cisco Secure Email CWE-707 9.8 Critical 2026-09-14
CVE-2026-20353 Cisco Secure Email Gateway Security Hardening Release — Cisco Secure Email CWE-664 9.8 Critical 2026-09-14
CVE-2026-76440 Cisco Secure Email Gateway Security Hardening Release — Cisco Secure Email CWE-23 9.8 Critical 2026-09-14
CVE-2026-76441 Cisco Secure Email Gateway Security Hardening Release — Cisco Secure Email and Web Manager CWE-284 9.8 Critical 2026-09-14
CVE-2026-20293 Cisco UCS and UCS-Based Appliances UEFI Shell Secure Boot Bypass Vulnerability — Cisco Enterprise NFV Infrastructure Software CWE-749 7.1 High 2026-09-08
CVE-2026-20355 Cisco Secure Email S/MIME Ciphertext Decryption Vulnerabilty — Cisco Secure Email CWE-345 5.9 Medium 2026-09-02
CVE-2026-20354 Cisco Secure Email S/MIME Ciphertext Decryption Vulnerabilty — Cisco Secure Email CWE-354 5.9 Medium 2026-09-02
CVE-2026-20281 Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Denial of Service Vulnerability — Cisco Session Initiation Protocol (SIP) Software CWE-401 7.5 High 2026-09-02
CVE-2026-20280 Cisco IOS XR Software Security Hardening Release: September 2026 — Cisco IOS XR Software CWE-703 8.8 High 2026-09-02

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.