Back to Database
Status published
Critical
CVE-2023-28769
The buffer overflow vulnerability in the library “libclinkc.so” of the...
Vulnerability Description
The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-28769
Credits & Attribution
No credits recorded in the NVD database.
More from Zyxel
View All →CVE-2025-9133
A missing authorization vulnerability in Zyxel ATP series firmware versions...
High
8.1
CVE-2025-8693
A post-authentication command injection vulnerability in the "priv" parameter of...
High
8.8
CVE-2025-8078
A post-authentication command injection vulnerability in Zyxel ATP series firmware...
High
7.2
CVE-2025-7673
A buffer overflow vulnerability in the URL parser of the...
Critical
9.8
CVE-2025-6599
An uncontrolled resource consumption vulnerability in the web server of...
Medium
5.3
Affected Vendor
Zyxel
View all reports →Affected Software
DX5401-B0 firmware
Vulnerable Versions:
< V5.17(ABYO.1)C0
Timeline
Official Publish:
April 27th, 2023
Last Modified:
January 31st, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H