Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-3871 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://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 [email protected]AdvisoryBundleRemedyVendor

Weakness Enumeration

CWE-IDCWE NameSource
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')[email protected]

Affected Products

ProductVersions
Zyxel NR7101
<= 1.00(ABUV.11)C0

CPE

  • No CPEs found in CPE dictionary for this product.

Remediation

  • Upgrade: 1.00(ABUV.12)B4moderate effort
Zyxel Nebula LTE3301-PLUS
<= 1.18(ACCA.6)C0

CPE

  • No CPEs found in CPE dictionary for this product.

Remediation

  • Upgrade: 1.18(ACCA.8)V0moderate effort
Zyxel Nebula NR7101
<= 1.16(ACCC.1)C0

CPE

  • No CPEs found in CPE dictionary for this product.

Remediation

  • Upgrade: 1.16(ACCC.3)V0moderate effort
Zyxel VMG4005-B50B
<= 5.13(ABRL.5.4)C0

CPE

  • cpe:2.3:o:zyxel:vmg4005-b50b_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:zyxel:vmg4005-b50b:*:*:*:*:*:*:*:*

Remediation

  • Upgrade: 5.13(ABRL.5.5)C0moderate effort

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-3871
NVD Published Date:
Jun 2, 2026
NVD Last Modified:
Jul 22, 2026
Source:
[email protected]
CVE-2026-3871 Details - Not Deferred