CVE-2026-20199 MEDIUM

CVE-2026-20199

Vendor Cisco
Product Cisco ThousandEyes Enterprise Agent
Weakness CWE-74
Published May 20, 2026
Last update May 21, 2026

CVSS base score

4.7/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

What the vulnerability does

01Description

A vulnerability in the SSL certificate handling of Cisco ThousandEyes Virtual Appliance could allow an authenticated, remote attacker to execute commands on the underlying operating system as the root user. This vulnerability is due to insufficient validation of user-supplied input. An authenticated attacker could exploit this vulnerability by uploading a crafted certificate to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system. To exploit this vulnerability, the attacker must have valid administrative credentials.

Key dates

02Disclosure timeline

May 20, 2026 CVE published
May 21, 2026 Record updated