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Cisco — Vulnerabilities & Security Advisories 3253

Browse all 3253 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 IDTitleCVSSSeverityPublished
CVE-2026-20349 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerability — Cisco Secure Firewall Adaptive Security Appliance (ASA) SoftwareCWE-244 8.6 High2026-08-11
CVE-2026-20348 ClamAV XAR File Format Processing Memory Corruption Vulnerability — Cisco Secure EndpointCWE-120 7.5 High2026-08-07
CVE-2026-20345 ClamAV GPT File Format Processing Memory Corruption Vulnerability — Cisco Secure EndpointCWE-121 7.5 High2026-08-07
CVE-2026-20339 ClamAV PESpin File Format Processing Integer Overflow Vulnerability — Cisco Secure EndpointCWE-190 7.5 High2026-08-07
CVE-2026-20347 ClamAV Mach-O File Format Processing Memory Corruption Vulnerability — Cisco Secure EndpointCWE-125 7.5 High2026-08-07
CVE-2026-20346 ClamAV PDF File Format Processing Memory Corruption Vulnerability — Cisco Secure EndpointCWE-125 7.5 High2026-08-07
CVE-2026-20338 ClamAV ZIP File Format Processing Memory Corruption Vulnerability — Cisco Secure EndpointCWE-415 7.5 High2026-08-07
CVE-2026-20337 ClamAV ZIP File Format Processing Memory Corruption Vulnerability — Cisco Secure EndpointCWE-120 7.5 High2026-08-07
CVE-2026-20313 Cisco Catalyst SD-WAN Security Hardening Release - Memory Corruption Vulnerabilities — Cisco Catalyst SD-WAN ControllerCWE-1284 7.7 High2026-08-05
CVE-2026-20311 Cisco IOS XE Software Web UI Denial of Service Vulnerability — Cisco IOS XE SoftwareCWE-126 6.3 Medium2026-08-05
CVE-2026-20289 Cisco RoomOS Logging Subsystem Information Disclosure Vulnerability — Cisco RoomOS SoftwareCWE-532 5.7 Medium2026-08-05
CVE-2026-20312 Cisco Catalyst SD-WAN Security Hardening Release - Information Disclosure Vulnerabilities — Cisco Catalyst SD-WAN ControllerCWE-312 8.8 High2026-08-05
CVE-2026-20310 Cisco SD-WAN Software Security Hardening Release - Improper Link Resolution Before File Access — Cisco Catalyst SD-WAN ControllerCWE-59 9.1 Critical2026-08-05
CVE-2026-20303 Cisco Catalyst SD-WAN Security Hardening Release - Input Validation Vulnerabilities — Cisco Catalyst SD-WAN ControllerCWE-20 9.9 Critical2026-08-05
CVE-2026-20294 Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability — Cisco Catalyst SD-WAN ManagerCWE-319 6.5 Medium2026-08-05
CVE-2026-20301 Cisco IOS Software and IOS XE Software Extensible Messaging Client Protocol Denial of Service Vulnerability — Cisco IOS XE SoftwareCWE-606 8.6 High2026-08-05
CVE-2026-20288 Cisco IMC Remote Code Execution Vulnerability Remote Code Execution Vulnerability — Cisco Unified Computing System (Standalone)CWE-146 6.5 Medium2026-08-05
CVE-2026-20308 Cisco IOS XE Software Web-Based Management Interface Vulnerability — Cisco IOS XE SoftwareCWE-269 4.3 Medium2026-08-05
CVE-2026-20304 Cisco Catalyst SD-WAN Security Hardening Release - Access Control Vulnerabilities — Cisco Catalyst SD-WAN ControllerCWE-284 9.9 Critical2026-08-05
CVE-2026-20273 Cisco IOS XE Software Security Hardening Release — Cisco IOS XE SoftwareCWE-20 8.6 High2026-08-05
CVE-2026-20272 Cisco IOS XE Software Security Hardening Release — Cisco IOS XE SoftwareCWE-74 9.8 Critical2026-08-05
CVE-2026-20271 Cisco IOS XE Software Security Hardening Release — Cisco IOS XE SoftwareCWE-691 8.6 High2026-08-05
CVE-2026-20270 Cisco IOS XE Software Security Hardening Release — Cisco IOS XE SoftwareCWE-682 8.6 High2026-08-05
CVE-2026-20269 Cisco IOS XE Software Security Hardening Release — Cisco IOS XE SoftwareCWE-664 8.6 High2026-08-05
CVE-2026-20268 Cisco IOS XE Software Security Hardening Release — Cisco IOS XE SoftwareCWE-119 8.6 High2026-08-05
CVE-2026-20267 Cisco IOS XE Software Security Hardening Release — Cisco IOS XE SoftwareCWE-284 9.0 Critical2026-08-05
CVE-2026-20200 Cisco Integrated Management Controller Argument Injection and Remote Code Execution Vulnerability — Cisco Unified Computing System (Standalone)CWE-141 8.8 High2026-08-05
CVE-2026-20263 Cisco IOS XE Software Blocks Extensible Exchange Protocol Denial of Service Vulnerability — Cisco IOS XE SoftwareCWE-388 8.6 High2026-08-05
CVE-2026-20198 Cisco Integrated Management Controller Cross-Site Scripting Vulnerability — Cisco Enterprise NFV Infrastructure SoftwareCWE-79 4.8 Medium2026-08-05
CVE-2026-20124 Cisco IOS XE Software SNMP Denial of Service Vulnerability — Cisco IOS XE SoftwareCWE-772 7.7 High2026-08-05

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.