Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 returns 128 bytes of uninitialized buffer when receiving POST requests without SOAPAction header on UPnP port 1900, exposing internal memory to unauthenticated adjacent network attackers.
History

Wed, 03 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 03 Jun 2026 19:15:00 +0000

Type Values Removed Values Added
Title Uninitialized Buffer Leakage via UPnP POST Without SOAPAction

Wed, 03 Jun 2026 17:45:00 +0000

Type Values Removed Values Added
Description Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 returns 128 bytes of uninitialized buffer when receiving POST requests without SOAPAction header on UPnP port 1900, exposing internal memory to unauthenticated adjacent network attackers.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-03T19:35:56.761Z

Reserved: 2026-04-06T00:00:00.000Z

Link: CVE-2026-36611

cve-icon Vulnrichment

Updated: 2026-06-03T19:35:49.406Z

cve-icon NVD

Status : Received

Published: 2026-06-03T18:16:22.357

Modified: 2026-06-03T20:16:19.733

Link: CVE-2026-36611

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-03T19:00:17Z