CVE-2026-20211
ZDI-26-717: Cisco Identity Services Engine AlarmMessageDiskQueue Deserialization of Untrusted Data Remote Code Execution Vulnerability
Published Sep 18, 2026
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco Identity Services Engine. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.2. The following CVEs are assigned: CVE-2026-20211.
Timeline
Detection, updates, and resolution for this record.
Sep 18, 2026 · Catalog
Detected
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco Identity Services Engine. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.2. The following CVEs are assigned: CVE-2026-20211.
Sources
- CVE.orgCVE-2026-20211
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-20211
30-day exploitation probability 0.6%
first.org - Zero Day InitiativeZDI-26-717
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco Identity Services Engine. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.2. The following CVEs are assigned: CVE-2026-20211.
zerodayinitiative.com