CRITICAL 9.8 NVD

CVE-2026-20274

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive intern

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20274 are related to improper resource control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-664.

References

Published: 2026-09-02 · Source: NVD · Feed updated: 2026-09-02
This critical severity vulnerability with a CVSS score of 9.8 was published on 2026-09-02 via NVD.

Risk Timeline

CVE Disclosed2026-09-02 · -1 days ago

Remediation Resources

Official Advisory
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/
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