CVE-2023-27992

Known Exploited

Description

The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request.

References

Link	Tags
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-pre-authentication-command-injection-vulnerability-in-nas-products	patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-27992?: CVE-2023-27992 has been scored as a critical severity vulnerability.
How to fix CVE-2023-27992?: To fix CVE-2023-27992, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-27992 being actively exploited in the wild?: It is confirmed that CVE-2023-27992 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~88% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-27992?: CVE-2023-27992 affects Zyxel NAS326 firmware, Zyxel NAS540 firmware, Zyxel NAS542 firmware.

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Description

Category

CWE-78 – Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

Frequently Asked Questions