Cisco vulnerabilities
3,442 CVEs and advisories name Cisco as an affected vendor, 63 of them on CISA's Known Exploited Vulnerabilities catalog, newest first. Follow it as a feed.
- CVE-2026-20234Cisco Identity Services Engine Hardening Release - Insuffiencently Protected Credential Vulnerabilities
- CVE-2026-20331Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Protection Mechanism Failure Vulnerabilities
- CVE-2026-76420Cisco Secure Firewall Management Center Software Impersonated sftunnel Connection Vulnerability
- CVE-2026-20307Cisco Identity Services Engine Remote Code Execution Vulnerability
- CVE-2026-20305Cisco Identity Services Engine Command Injection Vulnerability
- CVE-2026-20306Cisco Identity Services Engine Command Injection Vulnerability
- CVE-2026-76442Cisco Secure Email Gateway Security Hardening Release
- CVE-2026-76461Cisco Secure Email Gateway SQL Injection Vulnerability
- CVE-2026-76443Cisco Secure Email Gateway Security Hardening Release
- CVE-2026-76440Cisco Secure Email Gateway Security Hardening Release
- CVE-2026-20353Cisco Secure Email Gateway Security Hardening Release
- CVE-2026-76441Cisco Secure Email Gateway Security Hardening Release
- CVE-2026-20293Cisco UCS and UCS-Based Appliances UEFI Shell Secure Boot Bypass Vulnerability
- CVE-2026-20355Cisco Secure Email S/MIME Ciphertext Decryption Vulnerabilty
- CVE-2026-20354Cisco Secure Email S/MIME Ciphertext Decryption Vulnerabilty
- CVE-2026-20281Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Denial of Service Vulnerability
- CVE-2026-20278Cisco IOS XR Software Security Hardening Release: September 2026
- CVE-2026-20280Cisco IOS XR Software Security Hardening Release: September 2026
- CVE-2026-20279Cisco IOS XR Software Security Hardening Release: September 2026
- CVE-2026-20275Cisco IOS XR Software Security Hardening Release: September 2026
- CVE-2026-20274Cisco IOS XR Software Security Hardening Release: September 2026
- CVE-2026-20276Cisco IOS XR Software Security Hardening Release: September 2026
- CVE-2026-20277Cisco IOS XR Software Security Hardening Release: September 2026
- CVE-2026-20212Cisco Nexus 3000 and 9000 Series Switches Silicon One Hardware Abstraction Layer Remote Code Execution Vulnerability
- CVE-2026-20320A vulnerability in the Open Client Interface (OCI) XML Parser of Cisco BroadWorks could allow an unauthenticated, remote attacker to read…
- CVE-2026-20327Cisco Unified Intelligence Center SQL Injection Vulnerability
- CVE-2026-20314Cisco Packaged Contact Center Enterprise & Cisco Unified Contact Center Enterprise Server-Side Request Forgery Vulnerability
- CVE-2026-20319Cisco Secure Workload Software Security Hardening Release August 2026 - Buffer Management Vulnerabilities
- CVE-2026-20315Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Access Control Vulnerabilities
- CVE-2026-20317Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Authentication Vulnerabilities