{"id":"CVE-2026-83931","title":"Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.","summary":"Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-122"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T21:19:07.153","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-83931","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83931","label":"secure@microsoft.com"}],"tags":["nvd"],"ingestedAt":"2026-10-13T19:43:29.144Z","slug":"CVE-2026-83931","body":"## Overview\n\nHeap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}