CVE-2026-20161

Medium

Description

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.

SeverityMedium
CVSS5.5
Exploit probability3. percentile0.1%
ProductCisco ThousandEyes Enterprise Agent
PublishedApr 15, 2026
First seenApr 15, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
Cisco Cisco ThousandEyes Enterprise AgentAgent 5.0, Agent 4.4.4, Agent 4.4.3, Agent 4.4.2, Agent 4.2, Agent 4.1, Agent 4.0, Agent 5.1, Agent 5.1.2—

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