CVE-2026-36606

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909 encrypts configuration backups with a hardcoded DES key using single DES in ECB mode. An attacker who obtains a backup file can decrypt it to recover all stored credentials including admin password, WiFi PSK, and DDNS credentials."}, {"lang": "es", "value": "El router Mercusys AC12G (EU) V1 con el firmware AC12G(EU)_V1_200909 cifra las copias de seguridad de la configuraci\u00f3n con una clave DES codificada de forma r\u00edgida utilizando DES simple en modo ECB. Un atacante que obtiene un archivo de copia de seguridad puede descifrarlo para recuperar todas las credenciales almacenadas, incluyendo la contrase\u00f1a de administrador, la PSK de WiFi y las credenciales de DDNS."}], "id": "CVE-2026-36606", "lastModified": "2026-07-22T19:10:00.120", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-36606", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-06-03T18:32:22.105357Z", "version": "2.0.3"}}]}, "published": "2026-06-03T18:16:21.677", "references": [{"source": "cve@mitre.org", "url": "https://github.com/Tymbark7372/MERCUSYS-AC12G/blob/master/advisories/CVE-2026-36606.md"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-798"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "V1_200909"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "ac12g", "vendor": "mercusys"}], "created": "2026-06-03T18:30:36.291961+00:00", "title": "Hardcoded DES Key in Router Backup Enables Credential Exposure", "updated": "2026-06-05T10:12:31.405374+00:00", "vendors": ["mercusys", "mercusys$PRODUCT$ac12g"]}