CVE-2023-28771
Published: Apr 25, 2023
Modified: Oct 21, 2025
CVSS v3.1
9.8
Description
Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device.
| Vendor | Product | Versions |
|---|---|---|
Zyxel | ZyWALL/USG series firmware | affected 4.60 through 4.73 |
Zyxel | VPN series firmware | affected 4.60 through 5.35 |
Zyxel | USG FLEX series firmware | affected 4.60 through 5.35 |
Zyxel | ATP series firmware | affected 4.60 through 5.35 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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