Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

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 function), this allows an attacker to reverse captured authentication tokens to recover the plaintext password.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:603e19dcb7b8dbe66320c88353647abab6448f9729baa621fd88cd2401e6c7d5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-327","description":"CWE-327 Use of a Broken or Risky Cryptographic Algorithm","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:32371b399f501a3828509722d1988bd648249bc1c34946b484b19cf12bf8bc56 · sha256:30376187d97ddacd… · /containers/adp/0/problemTypes/1/descriptions/0

{"cweId":"CWE-341","description":"CWE-341 Predictable from Observable State","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:32371b399f501a3828509722d1988bd648249bc1c34946b484b19cf12bf8bc56 · sha256:30376187d97ddacd… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:32371b399f501a3828509722d1988bd648249bc1c34946b484b19cf12bf8bc56 · sha256:30376187d97ddacd… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:32371b399f501a3828509722d1988bd648249bc1c34946b484b19cf12bf8bc56 · sha256:30376187d97ddacd… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:32371b399f501a3828509722d1988bd648249bc1c34946b484b19cf12bf8bc56 · sha256:30376187d97ddacd… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-327","description":"CWE-327 Use of a Broken or Risky Cryptographic Algorithm","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:32371b399f501a3828509722d1988bd648249bc1c34946b484b19cf12bf8bc56 · sha256:30376187d97ddacd… · /containers/adp/0/problemTypes/1/descriptions/0
{"cweId":"CWE-341","description":"CWE-341 Predictable from Observable State","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:32371b399f501a3828509722d1988bd648249bc1c34946b484b19cf12bf8bc56 · sha256:30376187d97ddacd… · /containers/adp/0/problemTypes/0/descriptions/0
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:32371b399f501a3828509722d1988bd648249bc1c34946b484b19cf12bf8bc56 · sha256:30376187d97ddacd… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://github.com/Tymbark7372/MERCUSYS-AC12G/blob/master/advisories/CVE-2026-36609.md"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:32371b399f501a3828509722d1988bd648249bc1c34946b484b19cf12bf8bc56 · sha256:30376187d97ddacd… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer