CVE-2023-37927

Description

The improper neutralization of special elements in the CGI program of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an authenticated attacker to execute some operating system (OS) commands by sending a crafted URL to a vulnerable device.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.74% Top 30%
Vendor Advisory zyxel.com
Affected: Zyxel NAS326 firmware
Affected: Zyxel NAS542 firmware
Published at:
Updated at:

References

Link Tags
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products patch vendor advisory
https://bugprove.com/knowledge-hub/cve-2023-37927-and-cve-2023-37928-multiple-post-auth-blind-os-command-and-python-code-injection-vulnerabilities-in-zyxel-s-nas-326-devices/

Frequently Asked Questions

What is the severity of CVE-2023-37927?
CVE-2023-37927 has been scored as a high severity vulnerability.
How to fix CVE-2023-37927?
To fix CVE-2023-37927, 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-2023-37927 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-37927 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-37927?
CVE-2023-37927 affects Zyxel NAS326 firmware, Zyxel NAS542 firmware.
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