CVE-2026-3871 – Zyxel UPnP Buffer Overflow Denial-of-Service

CVE ID :CVE-2026-3871

Published : June 2, 2026, 3:16 a.m. | 1 hour, 16 minutes ago

Description :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.

Severity: 6.5 | MEDIUM

Visit the link for more details, such as CVSS details, affected products, timeline, and more…