cisco-sa-hardening-iosxr-qg64NcMCriticalCVSS 9.8

Cisco IOS XR Software Security Hardening Release: September 2026

Published
September 2, 2026
Last Modified
September 11, 2026

🔗 CVE IDs covered (7)

CVE-2026-20276 →CVE-2026-20277 →CVE-2026-20278 →CVE-2026-20279 →CVE-2026-20280 →CVE-2026-20274 →CVE-2026-20275 →

📋 Description

🎯 Affected products264

  • Cisco IOS XR Software 3.0.0
  • Cisco IOS XR Software 3.0.1
  • Cisco IOS XR Software 2.0.0
  • Cisco IOS XR Software 3.2.0
  • Cisco IOS XR Software 3.2.3
  • Cisco IOS XR Software 3.2.2
  • Cisco IOS XR Software 3.2.1
  • Cisco IOS XR Software 3.2.4
  • Cisco IOS XR Software 3.2.50
  • Cisco IOS XR Software 3.2.6
  • Cisco IOS XR Software 3.3.0
  • Cisco IOS XR Software 3.3.4
  • Cisco IOS XR Software 3.3.3
  • Cisco IOS XR Software 3.3.2
  • Cisco IOS XR Software 3.3.1
  • Cisco IOS XR Software 3.4.0
  • Cisco IOS XR Software 3.4.1
  • Cisco IOS XR Software 3.4.2
  • Cisco IOS XR Software 3.4.3
  • Cisco IOS XR Software 3.5.0
  • Cisco IOS XR Software 3.5.2
  • Cisco IOS XR Software 3.5.3
  • Cisco IOS XR Software 3.5.4
  • Cisco IOS XR Software Base
  • Cisco IOS XR Software 3.6.1
  • Cisco IOS XR Software 3.6.2
  • Cisco IOS XR Software 3.6.3
  • Cisco IOS XR Software 3.6.0
  • Cisco IOS XR Software Base
  • Cisco IOS XR Software 3.7.1
  • +234 more not shown

🔗 References (2)