The vulnerability of the Extensible Messaging Client Protocol (XMCP) in Cisco IOS and Cisco IOS XE operating systems allows a perpetrator to induce a service failure.
🗓️ 07 Aug 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 8 Views
| Reporter | Title | Published | Views | Family All 11 |
|---|---|---|---|---|
 | CVE-2026-20301 | 5 Aug 202616:28 | – | attackerkb |
 | CVE-2026-20301 | 5 Aug 202617:55 | – | circl |
 | Cisco IOS Software and IOS XE Software Extensible Messaging Client Protocol Denial of Service Vulnerability | 5 Aug 202616:00 | – | cisco |
| Cisco Advance Notification for Publication of August 5, 2026, Security Advisories | 29 Jul 202616:00 | – | cisco |
 | Cisco IOS Software Extensible Messaging Client Protocol DoS (cisco-sa-ios-xmcp-thbAr34t) | 7 Aug 202600:00 | – | nessus |
| Cisco IOS XE Software Extensible Messaging Client Protocol DoS (cisco-sa-ios-xmcp-thbAr34t) | 7 Aug 202600:00 | – | nessus |
 | CVE-2026-20301 | 5 Aug 202616:28 | – | cve |
 | CVE-2026-20301 Cisco IOS Software and IOS XE Software Extensible Messaging Client Protocol Denial of Service Vulnerability | 5 Aug 202616:28 | – | cvelist |
 | EUVD-2026-53467 | 5 Aug 202616:28 | – | euvd |
 | CVE-2026-20301 | 5 Aug 202617:16 | – | nvd |
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07 Aug 2026 00:00Current
5.3Medium risk
Vulners AI Score5.3
CVSS 27.8
CVSS 38.6
EPSS0.00327