Path traversal in Cisco ThousandEyes Endpoint Agent for Windows

1) Path traversal

EUVDB-ID: #VU110215

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-20259

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a local user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the update process. A local user can use a symbolic link to perform an agent upgrade and delete arbitrary files on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ThousandEyes Endpoint Agent for Windows: before 2.3.3

CPE2.3

• cpe:2.3:a:cisco_systems:thousandeyes_endpoint_agent_for_windows:*:*:*:*:*:*:*:*

External links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-te-endagent-filewrt-zNcDqNRJ

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.