A buffer overflow vulnerability in the UPnP AddPortMapping() 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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 02 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 02 Jun 2026 04:15:00 +0000

Type Values Removed Values Added
First Time appeared Zyxel
Zyxel vmg4005-b50b Firmware
Vendors & Products Zyxel
Zyxel vmg4005-b50b Firmware

Tue, 02 Jun 2026 03:45:00 +0000

Type Values Removed Values Added
Title Upnp AddPortMapping Buffer Overflow Causes Temporary Denial of Service in Zyxel VMG4005-B50B

Tue, 02 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Description A buffer overflow vulnerability in the UPnP AddPortMapping() 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.
Weaknesses CWE-120
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: Zyxel

Published:

Updated: 2026-06-02T13:36:20.955Z

Reserved: 2026-03-10T08:42:15.293Z

Link: CVE-2026-3870

cve-icon Vulnrichment

Updated: 2026-06-02T13:36:17.263Z

cve-icon NVD

Status : Deferred

Published: 2026-06-02T03:16:16.890

Modified: 2026-07-22T19:10:00.120

Link: CVE-2026-3870

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-02T04:00:11Z

Weaknesses