cbcvebase.
CVE-2023-27992
published 2023-06-19

CVE-2023-27992: The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to…

critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2023-07-14
Exploited in the wild
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.

Affected

6 ranges
VendorProductVersion rangeFixed in
zyxelnas326_firmware< V5.21(AAZF.14)C0V5.21(AAZF.14)C0
zyxelnas326_firmware< 5.21\(aazf.14\)c05.21\(aazf.14\)c0
zyxelnas540_firmware< V5.21(AATB.11)C0V5.21(AATB.11)C0
zyxelnas540_firmware< 5.21\(aatb.11\)c05.21\(aatb.11\)c0
zyxelnas542_firmware< V5.21(ABAG.11)C0V5.21(ABAG.11)C0
zyxelnas542_firmware< 5.21\(abag.11\)c05.21\(abag.11\)c0

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vulncheck9.8CRITICAL
cisa9.8CRITICAL