Main Vulnerability Database Vulnerabilities #VU71972

OS Command Injection in ZyXEL Communications Corp. products - CVE-2022-38547

Published: February 7, 2023

Vulnerability identifier: #VU71972

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-38547

CWE-ID: CWE-78

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation. A remote user can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

ATP series
USG FLEX series
VPN series
USG series
ZyWALL

How to mitigate CVE-2022-38547

Install updates from vendor's website.

ATP series - update to 5.35
VPN series - update to 5.35
ZyWALL - update to 4.73
USG series - update to 4.73

External References

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

Related Security Bulletins