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.
Metrics
Affected Vendors & Products
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References
History
Wed, 03 Jun 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Static Nonce and Predictable XOR Encoding Enable Recovery of Plaintext Passwords on Mercusys AC12G Router | |
| Weaknesses | CWE-326 |
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 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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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-06-03T16:09:04.378Z
Reserved: 2026-04-06T00:00:00.000Z
Link: CVE-2026-36609
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-06-03T18:16:22.063
Modified: 2026-06-03T18:16:22.063
Link: CVE-2026-36609
Redhat
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OpenCVE Enrichment
Updated: 2026-06-03T18:30:36Z