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.
Published: 2023-04-25
Score: 9.8 Critical
EPSS: 94.3% High
KEV: Yes
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories

No advisories yet.

History

Tue, 21 Oct 2025 23:30:00 +0000


Tue, 21 Oct 2025 20:30:00 +0000


Tue, 21 Oct 2025 19:30:00 +0000


Mon, 03 Feb 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2023-05-31'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Zyxel Atp100 Atp100 Firmware Atp100w Atp100w Firmware Atp200 Atp200 Firmware Atp500 Atp500 Firmware Atp700 Atp700 Firmware Atp800 Atp800 Firmware Usg Flex 100 Usg Flex 100 Firmware Usg Flex 100w Usg Flex 100w Firmware Usg Flex 200 Usg Flex 200 Firmware Usg Flex 50 Usg Flex 500 Usg Flex 500 Firmware Usg Flex 50 Firmware Usg Flex 50w Usg Flex 50w Firmware Usg Flex 700 Usg Flex 700 Firmware Vpn100 Vpn1000 Vpn1000 Firmware Vpn100 Firmware Vpn300 Vpn300 Firmware Vpn50 Vpn50 Firmware Zywall Usg 100 Zywall Usg 100 Firmware Zywall Usg 310 Zywall Usg 310 Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: Zyxel

Published:

Updated: 2025-10-21T23:05:48.400Z

Reserved: 2023-03-23T00:00:00.000Z

Link: CVE-2023-28771

cve-icon Vulnrichment

Updated: 2024-08-02T13:51:38.311Z

cve-icon NVD

Status : Analyzed

Published: 2023-04-25T02:15:08.743

Modified: 2025-10-27T17:05:01.153

Link: CVE-2023-28771

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses