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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.

Found 112 results / 3365 Clear Filters
CVE ID Title CVSS Severity Published
CVE-2026-20278 Cisco IOS XR Software Security Hardening Release: September 2026 — Cisco IOS XR Software CWE-707 8.8 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
CVE-2026-20279 Cisco IOS XR Software Security Hardening Release: September 2026 — Cisco IOS XR Software CWE-284 9.8 Critical 2026-09-02
CVE-2026-20275 Cisco IOS XR Software Security Hardening Release: September 2026 — Cisco IOS XR Software CWE-682 8.8 High 2026-09-02
CVE-2026-20274 Cisco IOS XR Software Security Hardening Release: September 2026 — Cisco IOS XR Software CWE-664 9.8 Critical 2026-09-02
CVE-2026-20276 Cisco IOS XR Software Security Hardening Release: September 2026 — Cisco IOS XR Software CWE-691 8.6 High 2026-09-02
CVE-2026-20277 Cisco IOS XR Software Security Hardening Release: September 2026 — Cisco IOS XR Software CWE-693 8.2 High 2026-09-02
CVE-2026-20118 Cisco IOS-XR NCS 5500 and NCS 5700 Egress Packet Network Interfaces Aligner Interrupt Denial of Service Vulnerability — Cisco IOS XR Software CWE-460 6.8 Medium 2026-03-11
CVE-2026-20046 Cisco IOS XR Software CLI Privilege Escalation Vulnerability — Cisco IOS XR Software CWE-264 8.8 High 2026-03-11
CVE-2026-20074 Cisco IOS XR Software Multi-Instance Intermediate System-to-Intermediate System Denial of Service Vulnerability — Cisco IOS XR Software CWE-1287 7.4 High 2026-03-11
CVE-2026-20040 Cisco IOS XR Software CLI Privilege Escalation Vulnerability — Cisco IOS XR Software CWE-78 8.8 High 2026-03-11
CVE-2025-20340 Cisco IOS XR Address Resolution Protocol Broadcast Storm Vulnerability — Cisco IOS XR Software CWE-400 7.4 High 2025-09-10
CVE-2025-20159 Cisco IOS XR Software Management Interface ACL Bypass Vulnerability — Cisco IOS XR Software CWE-284 5.3 Medium 2025-09-10
CVE-2025-20248 Cisco IOS XR Software Image Verification Bypass Vulnerability — Cisco IOS XR Software CWE-347 6.0 Medium 2025-09-10
CVE-2025-20154 Cisco IOS, IOS XE and IOS XR Software TWAMP Denial of Service Vulnerability — Cisco IOS XR Software CWE-20 8.6 High 2025-05-07
CVE-2025-20209 Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability — Cisco IOS XR Software CWE-770 7.5 High 2025-03-12
CVE-2025-20177 Cisco IOS XR Software Image Verification Bypass Vulnerability — Cisco IOS XR Software CWE-274 6.7 Medium 2025-03-12
CVE-2025-20146 Cisco IOS XR Software for ASR 9000 Series Routers Layer 3 Multicast Routing Denial of Service Vulnerability — Cisco IOS XR Software CWE-20 8.6 High 2025-03-12
CVE-2025-20145 Cisco IOS XR Software Access Control List Bypass Vulnerability — Cisco IOS XR Software CWE-264 5.8 Medium 2025-03-12
CVE-2025-20144 Cisco IOS XR Software Access Control List Bypass Vulnerability — Cisco IOS XR Software CWE-284 4.0 Medium 2025-03-12
CVE-2025-20143 Cisco IOS XR Software Secure Boot Bypass Vulnerability — Cisco IOS XR Software CWE-347 6.7 Medium 2025-03-12
CVE-2025-20142 Cisco IOS XR Software for ASR 9000 Series Routers L2VPN Denial of Service Vulnerability — Cisco IOS XR Software CWE-20 8.6 High 2025-03-12
CVE-2025-20141 Cisco IOS XR Software Release 7.9.2 Denial of Service Vulnerabillity — Cisco IOS XR Software CWE-770 7.4 High 2025-03-12
CVE-2025-20138 Cisco IOS XR Software CLI Privilege Escalation Vulnerability — Cisco IOS XR Software CWE-78 8.8 High 2025-03-12
CVE-2025-20115 Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability — Cisco IOS XR Software CWE-120 8.6 High 2025-03-12
CVE-2021-1440 Cisco IOS XR Software BGP Resource Public Key Infrastructure Denial of Service Vulnerability — Cisco IOS XR Software CWE-617 6.8 Medium 2024-11-18
CVE-2022-20655 Cisco 多款产品操作系统命令注入漏洞 — Cisco IOS XR Software CWE-78 8.8 High 2024-11-15
CVE-2022-20846 Cisco IOS XR Software Cisco Discovery Protocol Buffer Overflow Vulnerability — Cisco IOS XR Software CWE-120 4.3 Medium 2024-11-15
CVE-2022-20845 Cisco Network Convergence System 4000 Series TL1 Denial of Service Vulnerability — Cisco IOS XR Software CWE-789 6.0 Medium 2024-11-15
CVE-2022-20849 Cisco IOS XR Software Broadband Network Gateway PPPoE Denial of Service Vulnerability — Cisco IOS XR Software CWE-391 6.1 Medium 2024-11-15

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.