Vulnerability in Cisco Thousandeyes Enterprise Agent
CVE-2026-20161
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.
EPSS: 0.001 (2.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Cisco Thousandeyes Enterprise Agent — versions Agent 5.0, Agent 4.4.4, Agent 4.4.3
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-20161?
- CVE-2026-20161 is a medium-severity vulnerability in Cisco Thousandeyes Enterprise Agent, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 2026-04-15.
- How severe is CVE-2026-20161?
- Medium severity. CVSS v3 base score is 5.5 out of 10.