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Status published
High
CVE-2023-22913
A post-authentication command injection vulnerability in the “account_operator.cgi” CGI program...
Vulnerability Description
A post-authentication command injection vulnerability in the “account_operator.cgi” CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow a remote authenticated attacker to modify device configuration data, resulting in denial-of-service (DoS) conditions on an affected device.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
Zyxel
View all reports →Affected Software
USG FLEX series firmware, VPN series firmware
Vulnerable Versions:
4.50 through 5.35, 4.30 through 5.35
Timeline
Official Publish:
April 24th, 2023
Last Modified:
February 12th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H