Security Advisory

CVE-2026-36609

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-03 00:00:00

Last updated 2026-06-03 19:38:09

Assigner mitre

CVSS score not scored

State PUBLISHED

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.

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