Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909 does not validate the HTTP Host header, enabling DNS rebinding attacks. An external attacker can rebind a domain to the router's internal IP address, extending the CORS wildcard vulnerability (Access-Control-Allow-Origin: *) to internet-originated attacks.
History

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

Type Values Removed Values Added
Weaknesses CWE-350
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 03 Jun 2026 18:45:00 +0000

Type Values Removed Values Added
Title DNS Rebinding Vulnerability in Mercusys AC12G Router V1
Weaknesses CWE-20

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

Type Values Removed Values Added
Description Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909 does not validate the HTTP Host header, enabling DNS rebinding attacks. An external attacker can rebind a domain to the router's internal IP address, extending the CORS wildcard vulnerability (Access-Control-Allow-Origin: *) to internet-originated attacks.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-03T19:41:23.415Z

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

Link: CVE-2026-36604

cve-icon Vulnrichment

Updated: 2026-06-03T19:40:58.647Z

cve-icon NVD

Status : Received

Published: 2026-06-03T18:16:21.420

Modified: 2026-06-03T20:16:19.340

Link: CVE-2026-36604

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-03T18:30:36Z