Riskcovery

CVE-2026-20161

Cisco ThousandEyes Enterprise Agent Arbitrary File Overwrite Vulnerability

State
Published
Severity
5.5 Medium
Published
Apr 15, 2026
Updated
Apr 15, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Ncisco

Weaknesses

  • CWE-59 Improper Link Resolution Before File Access ('Link Following')

Affected Products

ProductVersions
Cisco ThousandEyes Enterprise AgentCisco
  • Agent 5.0Affected
  • Agent 4.4.4Affected
  • Agent 4.4.3Affected
  • Agent 4.4.2Affected
  • Agent 4.2Affected
  • Agent 4.1Affected
  • Agent 4.0Affected
  • Agent 5.1Affected
  • Agent 5.1.2Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.