VULNERABILITY INTELLIGENCE
CVE-2026-3870
CVSS score6.5 MEDIUM
EPSS probability0.17%
CISA KEVNot currently listed
Published2026-06-02
Last modified2026-07-22
CVSS vectorCVSS: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 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.
Weakness classification
- security@zyxel.com.tw: CWE-120