ZL
Product
Zld
by Zyxel · last CVE Oct 21, 2025
On CISA KEVExploited in the wildRansomware-linked
21
CVEs
1
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 2High 9Medium 10Low 0
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Add Zld to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2024-42061
6.1
0%
Sep 3
A reflected cross-site scripting (XSS) vulnerability in the CGI program "dynamic_script.cgi" of Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series…
Affected: 4.32 before 5.39; 4.50 before 5.39; 4.16 before 5.39; 4.16 before 5.39
CVE-2023-35139
6.1
0%
Nov 28
A cross-site scripting (XSS) vulnerability in the CGI program of the Zyxel ATP series firmware versions 5.10 through 5.37, USG FLEX series firmware versions 5.00 through 5.37, USG…
Affected: 5.10 through 5.37; 5.00 through 5.37; 5.10 through 5.37; 5.00 through 5.37
CVE-2023-5960
5.5
0%
Nov 28
An improper privilege management vulnerability in the hotspot feature of the Zyxel USG FLEX series firmware versions 4.50 through 5.37 and VPN series firmware versions 4.30…
Affected: 4.50 through 5.37; 4.30 through 5.37
CVE-2023-5797
5.5
0%
Nov 28
An improper privilege management vulnerability in the debug CLI command of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through…
Affected: 4.32 through 5.37; 4.50 through 5.37; 4.16 through 5.37; 4.30 through 5.37
CVE-2023-5650
5.5
0%
Nov 28
An improper privilege management vulnerability in the ZySH of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG…
Affected: 4.32 through 5.37; 4.50 through 5.37; 4.16 through 5.37; 4.30 through 5.37
CVE-2023-37926
5.5
0%
Nov 28
A buffer overflow vulnerability in the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series firmware…
Affected: 4.32 through 5.37; 4.50 through 5.37; 4.16 through 5.37; 4.30 through 5.37
CVE-2023-37925
5.5
0%
Nov 28
An improper privilege management vulnerability in the debug CLI command of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through…
Affected: 4.32 through 5.37; 4.50 through 5.37; 4.16 through 5.37; 4.30 through 5.37
CVE-2023-35136
5.5
0%
Nov 28
An improper input validation vulnerability in the “Quagga” package of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through…
Affected: 4.32 through 5.37; 4.50 through 5.37; 4.16 through 5.37; 4.30 through 5.37
CVE-2024-6343
4.9
1%
Sep 3
A buffer overflow vulnerability in the CGI program of Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series firmware versions from V4.50 through V5.38, USG…
Affected: 4.32 before 5.39; 4.50 before 5.39; 4.16 before 5.39; 4.16 before 5.39
CVE-2023-4397
4.4
0%
Nov 28
A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series firmware version 5.37, USG FLEX 50(W) series firmware version 5.37, and USG20(W)-VPN…
Affected: 5.37; 5.37; 5.37
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