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CVE-2026-36611

Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 returns 128 bytes of uninitialized buffer when receiving POST requests without SOAPAction header on UPnP port 1900, exposing internal memory to unauthenticated adjacent network attackers.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a01d36ee38d415efbfa8ed353394bb240c4e041d8bda9658d0448aa3ec0c6d71
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

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

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:05eb2b9ea975892ee595abb60542b25a30a6dc3dfeb6691a20ec1c19844330a2 · sha256:0a21ba684193f1f3… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-200","description":"CWE-200 Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:05eb2b9ea975892ee595abb60542b25a30a6dc3dfeb6691a20ec1c19844330a2 · sha256:0a21ba684193f1f3… · /containers/adp/0/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:v2:05eb2b9ea975892ee595abb60542b25a30a6dc3dfeb6691a20ec1c19844330a2 · sha256:0a21ba684193f1f3… · /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:v2:05eb2b9ea975892ee595abb60542b25a30a6dc3dfeb6691a20ec1c19844330a2 · sha256:0a21ba684193f1f3… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:05eb2b9ea975892ee595abb60542b25a30a6dc3dfeb6691a20ec1c19844330a2 · sha256:0a21ba684193f1f3… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-200","description":"CWE-200 Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:05eb2b9ea975892ee595abb60542b25a30a6dc3dfeb6691a20ec1c19844330a2 · sha256:0a21ba684193f1f3… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://github.com/Tymbark7372/MERCUSYS-AC12G/blob/master/advisories/CVE-2026-36611.md"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:05eb2b9ea975892ee595abb60542b25a30a6dc3dfeb6691a20ec1c19844330a2 · sha256:0a21ba684193f1f3… · /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.

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