CVE-2026-3871_CVE-2026-3871

6.5 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2026-3871

Source Zyxel

Published Jun 2, 2026 at 02:04

Affected Product

Vendor Zyxel

Product VMG4005-B50B firmware

Version <= 5.13(ABRL.5.4)C0

Affected Versions Zyxel VMG4005-B50B firmware <= 5.13(ABRL.5.4)C0

CWE Classification

CWE-120

References

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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    "published": "2026-06-02T02:04:17.047Z",
    "modified": "2026-06-02T02:04:17.047Z",
    "type": "cve",
    "title": "CVE-2026-3871",
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