cisco-sa-ios-xmcp-thbAr34tHighCVSS 8.6

Cisco IOS Software and IOS XE Software Extensible Messaging Client Protocol Denial of Service Vulnerability

Published
August 5, 2026
Last Modified
August 5, 2026

🔗 CVE IDs covered (1)

CVE-2026-20301 →

📋 Description

🎯 Affected products541

  • Cisco IOS 15.3(3)S10
  • Cisco IOS 15.2(6)E
  • Cisco IOS 15.2(4)E5
  • Cisco IOS 15.2(5)E2c
  • Cisco IOS 15.2(2)E8
  • Cisco IOS 15.2(4q)E1
  • Cisco IOS 15.2(6)E0a
  • Cisco IOS 15.2(6)E1
  • Cisco IOS 15.2(6)E0c
  • Cisco IOS 15.2(4)E6
  • Cisco IOS 15.2(6)E2
  • Cisco IOS 15.2(2)E9
  • Cisco IOS 15.2(6)E1a
  • Cisco IOS 15.2(4)E7
  • Cisco IOS 15.2(6)E1s
  • Cisco IOS 15.2(4s)E1
  • Cisco IOS 15.2(7)E
  • Cisco IOS 15.2(2)E10
  • Cisco IOS 15.2(4)E8
  • Cisco IOS 15.2(2)E9a
  • Cisco IOS 15.2(6)E2a
  • Cisco IOS 15.2(6)E2b
  • Cisco IOS 15.2(7)E1
  • Cisco IOS 15.2(7)E0a
  • Cisco IOS 15.2(7)E0b
  • Cisco IOS 15.2(7)E0s
  • Cisco IOS 15.2(6)E3
  • Cisco IOS 15.2(2)E10a
  • Cisco IOS 15.2(4)E9
  • Cisco IOS 15.2(7)E2
  • +511 more not shown

🔗 References (2)