CVE-2026-20274

Summary

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.

Affected Software

VendorProductVersion RangeStatus
CiscoCisco IOS XR Software6.5.29affected
CiscoCisco IOS XR Software7.0.1affected
CiscoCisco IOS XR Software6.5.26affected
CiscoCisco IOS XR Software6.5.25affected
CiscoCisco IOS XR Software6.5.28affected
CiscoCisco IOS XR Software6.5.90affected
CiscoCisco IOS XR Software7.1.1affected
CiscoCisco IOS XR Software7.0.90affected
CiscoCisco IOS XR Software6.7.1affected
CiscoCisco IOS XR Software7.0.2affected
CiscoCisco IOS XR Software7.1.15affected
CiscoCisco IOS XR Software7.2.1affected
CiscoCisco IOS XR Software7.1.2affected
CiscoCisco IOS XR Software6.7.2affected
CiscoCisco IOS XR Software7.0.11affected
CiscoCisco IOS XR Software7.0.12affected
CiscoCisco IOS XR Software7.0.14affected
CiscoCisco IOS XR Software7.1.25affected
CiscoCisco IOS XR Software7.2.12affected
CiscoCisco IOS XR Software7.3.1affected
CiscoCisco IOS XR Software7.1.3affected
CiscoCisco IOS XR Software6.7.3affected
CiscoCisco IOS XR Software7.4.1affected
CiscoCisco IOS XR Software7.2.2affected
CiscoCisco IOS XR Software6.7.4affected
CiscoCisco IOS XR Software6.5.31affected
CiscoCisco IOS XR Software7.3.15affected
CiscoCisco IOS XR Software7.3.16affected
CiscoCisco IOS XR Software6.8.1affected
CiscoCisco IOS XR Software7.4.15affected
CiscoCisco IOS XR Software6.5.32affected
CiscoCisco IOS XR Software7.3.2affected
CiscoCisco IOS XR Software7.5.1affected
CiscoCisco IOS XR Software7.4.16affected
CiscoCisco IOS XR Software7.3.27affected
CiscoCisco IOS XR Software7.6.1affected
CiscoCisco IOS XR Software7.5.2affected
CiscoCisco IOS XR Software7.8.1affected
CiscoCisco IOS XR Software7.6.15affected
CiscoCisco IOS XR Software7.5.12affected
CiscoCisco IOS XR Software7.8.12affected
CiscoCisco IOS XR Software7.3.3affected
CiscoCisco IOS XR Software7.7.1affected
CiscoCisco IOS XR Software6.8.2affected
CiscoCisco IOS XR Software7.3.4affected
CiscoCisco IOS XR Software7.4.2affected
CiscoCisco IOS XR Software6.7.35affected
CiscoCisco IOS XR Software6.9.1affected
CiscoCisco IOS XR Software7.6.2affected
CiscoCisco IOS XR Software7.5.3affected
CiscoCisco IOS XR Software7.7.2affected
CiscoCisco IOS XR Software6.9.2affected
CiscoCisco IOS XR Software7.9.1affected
CiscoCisco IOS XR Software7.10.1affected
CiscoCisco IOS XR Software7.8.2affected
CiscoCisco IOS XR Software7.5.4affected
CiscoCisco IOS XR Software6.5.33affected
CiscoCisco IOS XR Software7.8.22affected
CiscoCisco IOS XR Software7.7.21affected
CiscoCisco IOS XR Software7.9.2affected
CiscoCisco IOS XR Software7.3.5affected
CiscoCisco IOS XR Software7.5.5affected
CiscoCisco IOS XR Software7.11.1affected
CiscoCisco IOS XR Software7.9.21affected
CiscoCisco IOS XR Software7.10.2affected
CiscoCisco IOS XR Software24.1.1affected
CiscoCisco IOS XR Software7.6.3affected
CiscoCisco IOS XR Software7.3.6affected
CiscoCisco IOS XR Software7.5.52affected
CiscoCisco IOS XR Software7.11.2affected
CiscoCisco IOS XR Software24.2.1affected
CiscoCisco IOS XR Software24.1.2affected
CiscoCisco IOS XR Software24.2.11affected
CiscoCisco IOS XR Software24.3.1affected
CiscoCisco IOS XR Software24.4.1affected
CiscoCisco IOS XR Software24.2.2affected
CiscoCisco IOS XR Software7.8.23affected
CiscoCisco IOS XR Software7.11.21affected
CiscoCisco IOS XR Software24.2.20affected
CiscoCisco IOS XR Software24.3.2affected
CiscoCisco IOS XR Software24.4.10affected
CiscoCisco IOS XR Software6.5.35affected
CiscoCisco IOS XR Software25.1.1affected
CiscoCisco IOS XR Software24.4.2affected
CiscoCisco IOS XR Software24.3.20affected
CiscoCisco IOS XR Software24.4.15affected
CiscoCisco IOS XR Software25.2.1affected
CiscoCisco IOS XR Software6.5.351affected
CiscoCisco IOS XR Software25.1.2affected
CiscoCisco IOS XR Software24.3.30affected
CiscoCisco IOS XR Software25.3.1affected
CiscoCisco IOS XR Software6.5.352affected
CiscoCisco IOS XR Software24.4.30affected
CiscoCisco IOS XR Software24.2.21affected
CiscoCisco IOS XR Software25.4.1affected
CiscoCisco IOS XR Software25.2.2affected
CiscoCisco IOS XR Software25.2.15affected
CiscoCisco IOS XR Software7.2.0affected
CiscoCisco IOS XR Software7.0.0affected
CiscoCisco IOS XR Software25.2.30affected
CiscoCisco IOS XR Software6.5.353affected
CiscoCisco IOS XR Software26.1.1affected
CiscoCisco IOS XR Software25.1.30affected
CiscoCisco IOS XR Software25.3.15affected
CiscoCisco IOS XR Software26.2.100affected
CiscoCisco IOS XR Software25.4.2affected
CiscoCisco IOS XR Software26.2.1affected
CiscoCisco IOS XR Software25.4.30affected
CiscoCisco IOS XR Software26.1.2affected
CiscoCisco IOS XR Software25.4.201affected
CiscoCisco IOS XR Software26.2.101affected
CiscoCisco IOS XR Software25.2.21affected

Weaknesses

  • CWE-664: Improper Control of a Resource Through its Lifetime

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

Additional References

References