{"id":"CVE-2026-78861","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-78861","generatedAt":"2026-10-28T02:23:58.488Z","title":"An issue in Mercusys AC12 V2 allows a local attacker to execute arbitrary code via a hardcoded 512-bit RSA Private Key","description":"An issue in Mercusys AC12 V2 allows a local attacker to execute arbitrary code via a hardcoded 512-bit RSA Private Key","published":"2026-10-05T20:17:27.000Z","lastModified":"2026-10-06T17:17:27.000Z","status":"Deferred","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.7,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-789"],"affected":[],"epss":{"score":0.00205,"percentile":0.10363,"date":"2026-10-26","history":[{"date":"2026-10-06","score":0.0017,"percentile":0.05806}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-06T19:30:04.000Z","detail":{"from":null,"score":"7.7","severity":"HIGH","fromSeverity":null},"summary":"Now scored CVSS 7.7 HIGH."},{"kind":"new","label":"New CVE","at":"2026-10-05T20:17:27.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-05T20:17:27.427Z"},"summary":"New CVE, high severity (CVSS 7.7)."}],"references":[{"url":"http://ac12.com","source":"cve@mitre.org"},{"url":"http://mercusys.com","source":"cve@mitre.org"},{"url":"https://threadpoolx.gitbook.io/docs/cve/mercusys-ac12-v2-security-advisory/hardcoded-private-key","source":"cve@mitre.org"},{"url":"https://threadpoolx.gitbook.io/docs/cve/mercusys-ac12-v2-security-advisory/hardcoded-private-key","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-78861","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}