Link following in Cisco ThousandEyes Enterprise Agent - CVE-2026-20161

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Main Vulnerability Database Vulnerabilities #VU126394

Link following in Cisco ThousandEyes Enterprise Agent - CVE-2026-20161

Published: April 17, 2026


Vulnerability identifier: #VU126394
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-20161
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco ThousandEyes Enterprise Agent

Detailed vulnerability description

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.


How to mitigate CVE-2026-20161

Install updates from vendor's website.

Sources