VULNERABILITY INTELLIGENCE

CVE-2023-35139

CVSS score5.2 MEDIUM
EPSS probability0.46%
CISA KEVNot currently listed
Published2023-11-28
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

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 FLEX 50(W) series firmware versions 5.10 through 5.37, USG20(W)-VPN series firmware versions 5.10 through 5.37, and VPN series firmware versions 5.00 through 5.37, could allow an unauthenticated LAN-based attacker to store malicious scripts in a vulnerable device. A successful XSS attack could then result in the stored malicious scripts being executed to steal cookies when the user visits the specific CGI used for dumping ZTP logs.

Weakness classification

  • security@zyxel.com.tw: CWE-79

Primary references