Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 returns 128 bytes of uninitialized internal buffer contents when receiving HTTP POST requests to undefined paths, exposing server state to unauthenticated adjacent network attackers.

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History

Fri, 05 Jun 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Mercusys
Mercusys ac12g
Vendors & Products Mercusys
Mercusys ac12g

Wed, 03 Jun 2026 20:45:00 +0000

Type Values Removed Values Added
Title Uninitialized Buffer Disclosure via HTTP POST on Undefined Paths in Mercusys AC12G Router

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

Type Values Removed Values Added
Title Uninitialized Buffer Disclosure via HTTP POST on Undefined Paths in Mercusys AC12G Router
Weaknesses CWE-125
CWE-200
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

ssvc

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


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 internal buffer contents when receiving HTTP POST requests to undefined paths, exposing server state to unauthenticated adjacent network attackers.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-03T18:36:37.518Z

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

Link: CVE-2026-36613

cve-icon Vulnrichment

Updated: 2026-06-03T18:36:31.620Z

cve-icon NVD

Status : Deferred

Published: 2026-06-03T18:16:22.617

Modified: 2026-06-04T15:41:35.193

Link: CVE-2026-36613

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-05T10:12:21Z

Weaknesses