Vulnerability · Published Feb 7, 2023 · Assigned by Zyxel

CVE-2022-38547

High 7.2

In plain English

A high-severity OS command injection in ATP series firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.8% (higher than 87% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)2.8%top 13.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Zyxel	ZyWALL/USG series firmware	4.20 through 4.72
Zyxel	VPN series firmware	4.30 through 5.32
Zyxel	USG FLEX series firmware	4.50 through 5.32
Zyxel	ATP series firmware	4.32 through 5.32

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firewalls