CVE record · CVE-2025-11730

OS command injection in Zyxel ATP series firmware and others

CVSS 7.2 HighEPSS 0.014 · 73rd percentile

Published by the CVE Program (CNA: Zyxel) at 5 Feb 2026, 01:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Zyxel	ATP series firmware	affected versions from V5.35 through V5.41 Other versions: unaffected
Zyxel	USG FLEX series firmware	affected versions from V5.35 through V5.41 Other versions: unaffected
Zyxel	USG FLEX 50(W) series firmware	affected versions from V5.35 through V5.41 Other versions: unaffected
Zyxel	USG20(W)-VPN series firmware	affected versions from V5.35 through V5.41 Other versions: unaffected

Identifiers: CVE-2025-11730
CNA: Zyxel
Weakness (CWE): CWE-78
Tags: Zyxel ATP series firmware
Zyxel USG FLEX series firmware
Zyxel USG FLEX 50(W) series firmware
Zyxel USG20(W)-VPN series firmware
Command injection
Published: 5 Feb 2026
Updated: 26 Feb 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.2	High	3.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	CNA (Zyxel)

CISA KEV Not listed.
EPSS 0.014, the 73rd percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 5 Feb 2026. New records show when each source confirmed them.

Sources

References from the CNA

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-the-ddns-configuration-cli-command-of-zld-firewalls-02-05-2026 vendor-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.