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CVE-2026-20263

criticalCVSS 8.6covered by 6 sourcesfirst seen 2026-08-05
An attacker can exploit multiple vulnerabilities in Cisco IOS XE to execute arbitrary code, bypass security measures, disclose confidential information, manipulate data, or trigger a denial of service condition.

CSIRTS triage

What
Multiple vulnerabilities enable arbitrary code execution, security bypass, information disclosure, data manipulation, and denial of service.
Who is affected
Devices running vulnerable Cisco IOS XE versions.
Urgency
High severity with multiple attack vectors including unauthenticated code execution requires immediate patching.
Action
Consult Cisco security advisories for affected IOS XE releases and deploy patches urgently.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Advisory coverage (6)

External references

NVD record for CVE-2026-20263

CVE.org record

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