Link following in Cisco ThousandEyes Enterprise Agent - CVE-2026-20161
Published: April 17, 2026
Vulnerability identifier: #VU126394
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-20161
CWE-ID: CWE-59
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 an insecure link following issue in the CLI. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.
Affected software
Cisco ThousandEyes Enterprise Agent
How to mitigate CVE-2026-20161
Install updates from vendor's website.
Cisco ThousandEyes Enterprise Agent - update to 1.234.0