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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-20277

Cisco IOS XR Software Security Hardening Release: September 2026

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
cisco

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco Cisco IOS XR Software

Default version status: unknown

  • 6.5.29affected
  • 7.0.1affected
  • 6.5.26affected
  • 6.5.25affected
  • 6.5.28affected
  • 6.5.90affected
  • 7.1.1affected
  • 7.0.90affected
  • 6.7.1affected
  • 7.0.2affected
  • 7.1.15affected
  • 7.2.1affected
  • 7.1.2affected
  • 6.7.2affected
  • 7.0.11affected
  • 7.0.12affected
  • 7.0.14affected
  • 7.1.25affected
  • 7.2.12affected
  • 7.3.1affected
  • 7.1.3affected
  • 6.7.3affected
  • 7.4.1affected
  • 7.2.2affected
  • 6.7.4affected
  • 6.5.31affected
  • 7.3.15affected
  • 7.3.16affected
  • 6.8.1affected
  • 7.4.15affected
  • 6.5.32affected
  • 7.3.2affected
  • 7.5.1affected
  • 7.4.16affected
  • 7.3.27affected
  • 7.6.1affected
  • 7.5.2affected
  • 7.8.1affected
  • 7.6.15affected
  • 7.5.12affected
  • 7.8.12affected
  • 7.3.3affected
  • 7.7.1affected
  • 6.8.2affected
  • 7.3.4affected
  • 7.4.2affected
  • 6.7.35affected
  • 6.9.1affected
  • 7.6.2affected
  • 7.5.3affected
  • 7.7.2affected
  • 6.9.2affected
  • 7.9.1affected
  • 7.10.1affected
  • 7.8.2affected
  • 7.5.4affected
  • 6.5.33affected
  • 7.8.22affected
  • 7.7.21affected
  • 7.9.2affected
  • 7.3.5affected
  • 7.5.5affected
  • 7.11.1affected
  • 7.9.21affected
  • 7.10.2affected
  • 24.1.1affected
  • 7.6.3affected
  • 7.3.6affected
  • 7.5.52affected
  • 7.11.2affected
  • 24.2.1affected
  • 24.1.2affected
  • 24.2.11affected
  • 24.3.1affected
  • 24.4.1affected
  • 24.2.2affected
  • 7.8.23affected
  • 7.11.21affected
  • 24.2.20affected
  • 24.3.2affected
  • 24.4.10affected
  • 6.5.35affected
  • 25.1.1affected
  • 24.4.2affected
  • 24.3.20affected
  • 24.4.15affected
  • 25.2.1affected
  • 6.5.351affected
  • 25.1.2affected
  • 24.3.30affected
  • 25.3.1affected
  • 6.5.352affected
  • 24.4.30affected
  • 24.2.21affected
  • 25.4.1affected
  • 25.2.2affected
  • 25.2.15affected
  • 7.2.0affected
  • 7.0.0affected
  • 25.2.30affected
  • 6.5.353affected
  • 26.1.1affected
  • 25.1.30affected
  • 25.3.15affected
  • 26.2.100affected
  • 25.4.2affected
  • 26.2.1affected
  • 25.4.30affected
  • 26.1.2affected
  • 25.4.201affected
  • 26.2.101affected
  • 25.2.21affected

References