Cisco Patches 7 IOS XE Vulnerability Classes, Including Critical Command Injection Flaws

Gbhackers •Divya • August 6, 2026

Cisco has released security-hardening updates for IOS XE Software that address seven classes of vulnerabilities, including a critical command, operating system, and argument injection category identified as CVE-2026-20272. The advisory, released on August 5, has an overall CVSS score of 3.1 and 9.8 and provides no workarounds, meaning that upgrading is the only recommended solution. […]

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Cisco Issues Critical Security Advisories for IOS XE and SD-WAN Vulnerabilities Cisco has released critical security advisories for multiple vulnerabilities affecting its IOS XE and Catalyst SD-WAN Software. The advisories, published on August 5, 2026, detail vulnerabilities that could allow attackers to bypass security controls, execute arbitrary commands, and gain unauthorized access. Key vulnerabilities include CVE-2026-20272 for IOS XE with a CVSS score of 9.8, and CVE-2026-20304 for SD-WAN, also with a CVSS score of 9.9. Cisco confirmed that there is currently no evidence of active exploitation for these vulnerabilities. The advisories emphasize the importance of patching affected systems promptly, as edge devices are often targeted by attackers. Organizations are urged to follow NCSC-UK's guidance on vulnerability management. Additional vulnerabilities in Cisco's Integrated Management Controller (IMC) were also disclosed, with a public proof-of-concept exploit available. 43 sources 74

Extracted Entities

Cisco Patches 7 IOS XE Vulnerability Classes, Including Critical Command Injection Flaws

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Extracted Entities

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