Vulnerability Description
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-2026-20277 are related to protection mechanism failure issues that are grouped under the Common Weakness Enumeration (CWE) CWE-693.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ci
- https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Lev
FAQ
What is CVE-2026-20277?
CVE-2026-20277 is a vulnerability with a CVSS score of 8.2 (HIGH). 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...
How severe is CVE-2026-20277?
CVE-2026-20277 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-20277?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.