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Vulnerability record · CVE-2022-38547 · published 7 February 2023

CVE-2022-38547: Zyxel atp100 firmware os command injection vulnerability

Zyxel · Atp100 Firmware

A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands.

7.2 CVSS 3.1 High EPSS 2.8% · top 13.8% CWE-78 · OS command injection
7.2CVSS 3.1 base score
2.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
25Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands.

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

Affected products

25 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firew Vendor Advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firew Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-38547), CISA KEV, FIRST EPSS (scores of 2026-10-12). This page is refreshed as NVD updates the record.