What is CVE-2026-36609?

CVE-2026-36609 is a high-severity vulnerability in N/a, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.3/10. Published 2026-06-03.

How severe is CVE-2026-36609?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in N/a

CVE-2026-36609

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 fun…

Vulnerability class: POODLE (CVE-2014-3566)

EPSS: 0.000 (9.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm
CWE-341

References

cve@mitre.org

Frequently asked questions

What is CVE-2026-36609?: CVE-2026-36609 is a high-severity vulnerability in N/a, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.3/10. Published 2026-06-03.
How severe is CVE-2026-36609?: High severity. CVSS v3 base score is 7.3 out of 10.