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CVE-2026-20136

MEDIUM CVSS 3.1: 6.0
Updated Apr 17, 2026
Cisco
Parameter Value
CVSS 6.0 (MEDIUM)
Type CWE-116 (Improper Encoding or Escaping of Output)
Vendor Cisco
Public PoC No

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.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v3.1