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CVE-2026-20161

MEDIUM CVSS 3.1: 5.5
Updated Apr 17, 2026
Cisco
Parameter Value
CVSS 5.5 (MEDIUM)
Type CWE-59 (Improper Link Resolution)
Vendor Cisco
Public PoC No

A vulnerability in the CLI of Cisco ThousandEyes Enterprise Agent could allow an authenticated, local attacker with low privileges to overwrite arbitrary files on the local system of an affected device. This vulnerability is due to improper access controls on files that are on the local file system of an affected device. An attacker could exploit this vulnerability by placing a symbolic link in a specific location on the local file system.

A successful exploit could allow the attacker to bypass file system permissions and overwrite arbitrary files on the affected device.

Attack Parameters

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

Impact Assessment

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

CVSS Vector v3.1