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CVE-2026-20180

9.9 critical exploit SSVC exploitation: none Analyzed
NVD · CVE.org

A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least Read Only Admin credentials. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. In single-node ISE deployments, successful exploitation of these vulnerabilities could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.

Fix

Public exploits 1

Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 9.9 · ciscoNVD modified 2026-10-26 22:10

Affected (CPE criteria) 21

  • cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:-:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch1:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch2:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch3:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch4:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch5:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch6:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch7:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.3.0:-:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch1:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch2:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch3:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch4:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch5:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch6:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch7:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.4.0:-:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch1:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch2:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch3:*:*:*:*:*:*

References 1