CVE-2023-4474

Published Nov 30, 2023 CVSS 3.1 · 9.8 Critical EPSS 29.7% KEV · Not listed
Description
The improper neutralization of special elements in the WSGI server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted URL to a vulnerable device.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'Yes', 'Exploitation': 'PoC', 'Technical Impact': 'Total'}, 'version': '2.0.3'}

ssvc

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

Type Values Removed Values Added
CPEs cpe:2.3:o:zyxel:nas326_firmware:5.21\(aazf.14\)c0:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nas542_firmware:5.21\(abag.11\)c0:*:*:*:*:*:*:*
Metrics ssvc

{'options': {'Automatable': 'Yes', 'Exploitation': 'PoC', 'Technical Impact': 'Total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Zyxel
Published
Updated
Dec 16, 2025, 6:23 PM
Reserved
Aug 22, 2023, 6:51 AM
Status
Modified
Published
Nov 30, 2023, 2:15 AM
Modified
Jun 17, 2026, 6:37 AM