{"id":"CVE-2026-83766","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-83766","generatedAt":"2026-10-28T02:21:37.695Z","title":"Incorrect authorization in Windows Hyper-V allows an authorized attacker to bypass a security feature over an adjacent network.","description":"Incorrect authorization in Windows Hyper-V allows an authorized attacker to bypass a security feature over an adjacent network.","published":"2026-10-13T19:20:24.000Z","lastModified":"2026-10-16T16:21:29.000Z","status":"Awaiting Analysis","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":4.2,"severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-863"],"affected":[],"epss":{"score":0.00407,"percentile":0.34762,"date":"2026-10-26","history":[{"date":"2026-10-14","score":0.00358,"percentile":0.27914}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-13T19:20:24.000Z","detail":{"score":"4.2","severity":"MEDIUM","publishedAt":"2026-10-13T19:20:23.500Z"},"summary":"New CVE, medium severity (CVSS 4.2)."}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83766","source":"secure@microsoft.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-83766","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."}