Main Vulnerability Database Vulnerabilities #VU76619

OS Command Injection in ZyXEL Communications Corp. products - CVE-2023-27988

Published: May 30, 2023

Vulnerability identifier: #VU76619

CSH Severity: Low

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-27988

CWE-ID: CWE-78

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to improper input validation in the web management interface. A remote administrator 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

NAS326
NAS540
NAS542

How to mitigate CVE-2023-27988

Install updates from vendor's website.

NAS326 - update to 5.21(AAZF.13)C0
NAS540 - update to 5.21(AATB.10)C0
NAS542 - update to 5.21(ABAG.10)C0

External References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-nas-products

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