CVE-2026-3871 MEDIUM

CVE-2026-3871

Vendor Zyxel
Product VMG4005-B50B firmware
Weakness CWE-120
Published June 2, 2026
Last update June 2, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

A buffer overflow vulnerability in the UPnP DeletePortMapping() command in Zyxel VMG4005-B50B firmware versions through 5.13(ABRL.5.4)C0 could allow an adjacent attacker to trigger a temporary denial-of-service (DoS) condition affecting the UPnP function of the affected device.

Key dates

02Disclosure timeline

June 2, 2026 CVE published
June 2, 2026 Record updated