CVE-2026-36613

Published Jun 3, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mercusys
Mercusys ac12g
Vendors & Products Mercusys
Mercusys ac12g
Type Values Removed Values Added
Title Uninitialized Buffer Disclosure via HTTP POST on Undefined Paths in Mercusys AC12G Router
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'}

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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jun 3, 2026, 6:36 PM
Reserved
Apr 6, 2026, 12:00 AM
Status
Deferred
Published
Jun 3, 2026, 6:16 PM
Modified
Jul 22, 2026, 7:10 PM