9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.03 Low
EPSS
Percentile
91.0%
The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior toΒ V5.21(AAZF.14)C0, NAS540 firmware versions prior toΒ V5.21(AATB.11)C0, and NAS542Β 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.