Riskcovery

CVE-2026-20280

Cisco IOS XR Software Security Hardening Release: September 2026

State
Published
Severity
8.8 High
Published
Sep 2, 2026
Updated
Sep 18, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

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-2026-20280 are related to improper checking or handling of exceptional condition issues that are grouped under the Common Weakness Enumeration (CWE) CWE-703.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hcisco

Weaknesses

  • CWE-703 Improper Check or Handling of Exceptional Conditions

Affected Products

ProductVersions
Cisco IOS XR SoftwareCisco
  • 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
  • and 87 more versions

References

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