CVE-2026-36609

HIGH EPSS 6.1%
Published Jun 3, 20264w ago · Modified Jun 17, 20262w ago
7.3 CVSS 3.1
High
Find Similar
Published Jun 3, 2026 4w ago
Last Modified Jun 17, 2026 2w ago

Description

Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909 uses a static authentication nonce that does not change between requests from the same source IP. Combined with the predictable XOR-based password encoding (securityEncode function), this allows an attacker to reverse captured authentication tokens to recover the plaintext password.

CVSS Details

Base Score
7.3
Exploitability
3.9
Impact
3.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
6.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-327
CWE-341

References 1

  • github.com https://github.com/Tymbark7372/MERCUSYS-AC12G/blob/master/advisories/CVE-2026-36609.md

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.