CVE-2026-20161

MEDIUM

Cisco ThousandEyes Enterprise Agent Arbitrary File Overwrite Vulnerability

Title source: cna
STIX 2.1

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

CVSS v3 5.5
EPSS 0.0001
EPSS Percentile 1.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-59
Status published
Products (9)
Cisco/Cisco ThousandEyes Enterprise Agent Agent 4.0
Cisco/Cisco ThousandEyes Enterprise Agent Agent 4.1
Cisco/Cisco ThousandEyes Enterprise Agent Agent 4.2
Cisco/Cisco ThousandEyes Enterprise Agent Agent 4.4.2
Cisco/Cisco ThousandEyes Enterprise Agent Agent 4.4.3
Cisco/Cisco ThousandEyes Enterprise Agent Agent 4.4.4
Cisco/Cisco ThousandEyes Enterprise Agent Agent 5.0
Cisco/Cisco ThousandEyes Enterprise Agent Agent 5.1
Cisco/Cisco ThousandEyes Enterprise Agent Agent 5.1.2
Published Apr 15, 2026
Tracked Since Apr 15, 2026