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Vulnerability · Published Nov 28, 2023 · Assigned by Zyxel

CVE-2023-37926

Medium 5.5

In plain English

A medium-severity buffer overflow in ATP series firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 87.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

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 versions 4.16 through 5.37, USG20(W)-VPN series firmware versions 4.16 through 5.37, and VPN series firmware versions 4.30 through 5.37, could allow an authenticated local attacker to cause denial-of-service (DoS) conditions by executing the CLI command to dump system logs on an affected device.

Affected products (as reported)

VendorProductVersions
Zyxel ATP series firmware versions 4.32 through 5.37
Zyxel USG FLEX series firmware versions 4.50 through 5.37
Zyxel USG FLEX 50(W) series firmware versions 4.16 through 5.37
Zyxel USG20(W)-VPN series firmware versions 4.16 through 5.37
Zyxel VPN series firmware versions 4.30 through 5.37

Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References