CVE Watch22 jul 2026

CVE-2026-3871

A buffer overflow vulnerability in the UPnP DeletePortMapping() command in Zyxel VMG4005-B50B firmware versions through 5.13(ABRL.5.4)C0 cou

CVSS

6.5

Medio

EPSS

0.2%

KEV

—

Exploit Today

0-100

Publicado: 2 jun 2026 · Última mod.: 22 jul 2026 · CWE-120

EPSS · 30d

0.2%EPSS · 30 días0.2%

2026-07-052026-08-02

Descripción técnica

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.

Referencias oficiales

www.zyxel.comhttps://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-buffer-overflow-vulnerabilities-in-the-upnp-function-of-certain-4g-lte-5g-nr-cpe-and-dsl-ethernet-cpe-06-02-2026

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