CVE-2023-4397
Zyxel · published 2023-11-28
Source record Collected from the National Vulnerability Database (NVD)
Description
Description by Zyxel Corporation via the CVE Program.
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 series firmware version 5.37, could allow an authenticated local attacker with administrator privileges to cause denial-of-service (DoS) conditions by executing the CLI command with crafted strings on an affected device.
Status at the source
- NVD status: Modified
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | ATP series firmware | 5.37: affected |
| Zyxel | USG FLEX series firmware | 5.37: affected |
| Zyxel | USG FLEX 50(W) series firmware | 5.37: affected |
| Zyxel | USG20(W)-VPN series firmware | 5.37: affected |
Products named in NVD's CPE match criteria (1)
cpe:2.3:o:zyxel:zld:5.37:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 4.4 MEDIUM — as published by Zyxel Corporation (Secondary)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps
Source dates: published 2023-11-28, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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