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Cisco — Vulnerabilities & Security Advisories 3192

Browse all 3192 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-2021-1565 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Service Vulnerabilities — Cisco IOS XE SoftwareCWE-415 8.6 High2021-09-23
CVE-2021-34770 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability — Cisco IOS XE SoftwareCWE-122 10.0 Critical2021-09-23
CVE-2021-34769 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Service Vulnerabilities — Cisco IOS XE SoftwareCWE-415 8.6 High2021-09-23
CVE-2021-34768 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Service Vulnerabilities — Cisco IOS XE SoftwareCWE-415 8.6 High2021-09-23
CVE-2021-34767 Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers IPv6 Denial of Service Vulnerability — Cisco IOS XE SoftwareCWE-670 7.4 High2021-09-23
CVE-2021-34740 Cisco Aironet Access Points WLAN Control Protocol Packet Buffer Leak Denial of Service Vulnerability — Cisco Aironet Access Point SoftwareCWE-401 7.4 High2021-09-23
CVE-2021-34729 Cisco IOS XE SD-WAN Software Command Injection Vulnerability — Cisco IOS XE SD-WAN SoftwareCWE-77 6.7 Medium2021-09-23
CVE-2021-34727 Cisco IOS XE SD-WAN Software Buffer Overflow Vulnerability — Cisco IOS XE SD-WAN SoftwareCWE-120 9.8 Critical2021-09-23
CVE-2021-34726 Cisco SD-WAN Software Command Injection Vulnerability — Cisco SD-WAN SolutionCWE-77 6.7 -2021-09-23
CVE-2021-34725 Cisco IOS XE SD-WAN Software Command Injection Vulnerability — Cisco IOS XE SD-WAN SoftwareCWE-77 6.7 Medium2021-09-23
CVE-2021-34724 Cisco IOS XE SD-WAN Software Privilege Escalation Vulnerability — Cisco IOS XE SD-WAN SoftwareCWE-284 6.0 Medium2021-09-23
CVE-2021-34705 Cisco IOS and IOS XE Software FXO Interface Destination Pattern Bypass Vulnerability — Cisco IOSCWE-232 5.3 Medium2021-09-23
CVE-2021-34712 Cisco SD-WAN vManage Software Cypher Query Language Injection Vulnerability — Cisco SD-WAN vManageCWE-943 5.4 Medium2021-09-23
CVE-2021-34714 Multiple Cisco Operating Systems Unidirectional Link Detection Denial of Service Vulnerability — Cisco IOSCWE-20 7.4 High2021-09-23
CVE-2021-34723 Cisco IOS XE SD-WAN Software Arbitrary File Overwrite Vulnerability — Cisco IOS XE SoftwareCWE-668 6.7 Medium2021-09-23
CVE-2021-34703 Cisco IOS and IOS XE Software Link Layer Discovery Protocol Denial of Service Vulnerability — Cisco IOSCWE-456 6.8 Medium2021-09-23
CVE-2021-34699 Cisco IOS and IOS XE Software TrustSec CLI Parser Denial of Service Vulnerability — Cisco IOSCWE-435 7.7 High2021-09-23
CVE-2021-34697 Cisco IOS XE Software Protection Against Distributed Denial of Service Attacks Feature Vulnerability — Cisco IOS XE SoftwareCWE-665 5.8 Medium2021-09-23
CVE-2021-34696 Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability — Cisco IOS XE SoftwareCWE-284 5.8 Medium2021-09-23
CVE-2021-1625 Cisco IOS XE Software Zone-Based Policy Firewall ICMP and UDP Inspection Vulnerability — Cisco IOS XE SoftwareCWE-284 5.8 Medium2021-09-23
CVE-2021-1624 Cisco IOS XE Software Rate Limiting Network Address Translation Denial of Service Vulnerability — Cisco IOS XE SoftwareCWE-399 8.6 High2021-09-23
CVE-2021-1623 Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers Simple Network Management Protocol Denial of Service Vulnerability — Cisco IOS XE SoftwareCWE-399 7.7 High2021-09-23
CVE-2021-1622 Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers Common Open Policy Service Denial of Service Vulnerability — Cisco IOS XE SoftwareCWE-833 8.6 High2021-09-23
CVE-2021-34786 Cisco BroadWorks CommPilot Application Software Vulnerabilities — Cisco BroadWorksCWE-620 6.5 Medium2021-09-09
CVE-2021-34785 Cisco BroadWorks CommPilot Application Software Vulnerabilities — Cisco BroadWorksCWE-620 6.5 Medium2021-09-09
CVE-2021-34771 Cisco IOS XR Software Unauthorized Information Disclosure Vulnerability — Cisco IOS XR SoftwareCWE-201 5.5 Medium2021-09-09
CVE-2021-34737 Cisco IOS XR Software DHCP Version 4 Server Denial of Service Vulnerability — Cisco IOS XR SoftwareCWE-476 5.8 Medium2021-09-09
CVE-2021-34728 Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerabilities — Cisco IOS XR SoftwareCWE-78 7.8 High2021-09-09
CVE-2021-34722 Cisco IOS XR Software Command Injection Vulnerabilities — Cisco IOS XR SoftwareCWE-78 6.7 Medium2021-09-09
CVE-2021-34721 Cisco IOS XR Software Command Injection Vulnerabilities — Cisco IOS XR SoftwareCWE-78 6.7 Medium2021-09-09

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.