What is CVE-2026-20206?

CVE-2026-20206 is a medium-severity vulnerability in Cisco Thousandeyes Enterprise Agent, classified under OS Command Injection. CVSS score: 6.3/10. Published 2026-05-20.

How severe is CVE-2026-20206?

Medium severity. CVSS v3 base score is 6.3 out of 10.

RCE in Cisco Thousandeyes Enterprise Agent

CVE-2026-20206

A vulnerability in the BrowserBot component of Cisco ThousandEyes Enterprise Agent could have allowed an authenticated, remote attacker to execute arbitrary commands on Agents on behalf of the BrowserBot synthetics orchestration process. C…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.001 (30.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Cisco Thousandeyes Enterprise Agent — versions Agent 5.0, Agent 4.4.4, Agent 4.4.3

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

psirt@cisco.com

Frequently asked questions

What is CVE-2026-20206?: CVE-2026-20206 is a medium-severity vulnerability in Cisco Thousandeyes Enterprise Agent, classified under OS Command Injection. CVSS score: 6.3/10. Published 2026-05-20.
How severe is CVE-2026-20206?: Medium severity. CVSS v3 base score is 6.3 out of 10.