Vulnerability in Cisco Identity Services Engine (CVE-2026-20136)
Summary
Vulnerability in Cisco Identity Services Engine (CVE-2026-20136). Confidential information can be exposed externally.
Original description
The description as published by the source.
A vulnerability in the CLI of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, local attacker with administrative privileges to perform a command injection attack on the underlying operating system and elevate privileges to root. This vulnerability is due to insufficient validation of user supplied input. An attacker could exploit this vulnerability by providing crafted input to a specific CLI command. A successful exploit could allow the attacker to elevate their privileges to root on the underlying operating system. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-cmd-inj-5WSJcYJB Security Impact Rating: Medium CVE: CVE-2026-20136
Source: Cisco Security Advisories NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-20136 has been found in Cisco Identity Services Engine.
Confidential information can be exposed externally. CVSS score: 6.0/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Cisco Identity Services Engine CVE-2026-20136" on the vendor's site.
CVE-2026-20136 (Cisco Identity Services Engine) — CWE-116 / CVSS v3 6.0
Attack vector: local / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-116) exists in Cisco Identity Services Engine.
Check the vendor advisory for the affected versions of Cisco Identity Services Engine.
Severity: Medium (CVSS 6.0/10). Confidential information can be exposed externally.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Cisco Identity Services Engine を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- CISCO sec.cloudapps.cisco.com
- patch psirt@cisco.com