Improper Encoding or Escaping of Output in Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) - CVE-2026-20136
Published: April 17, 2026
Vulnerability identifier: #VU126401
CSH Severity: Low
CVSS v4: 8.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-20136
CWE-ID: CWE-116
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to compromise the target system.
The vulnerability exists due to improper encoding or escaping of output in the CLI. A local administrator can elevated privileges on the target system.
Affected software
Cisco Identity Services Engine (ISE)
ISE Passive Identity Connector (ISE-PIC)
ISE Passive Identity Connector (ISE-PIC)
How to mitigate CVE-2026-20136
Install updates from vendor's website.
Cisco Identity Services Engine (ISE) - addressed in versions 3.3 Patch 11, 3.4 Patch 6, 3.5 Patch 3
ISE Passive Identity Connector (ISE-PIC) - addressed in versions 3.3 Patch 11, 3.4 Patch 6
ISE Passive Identity Connector (ISE-PIC) - addressed in versions 3.3 Patch 11, 3.4 Patch 6