CVE-2026-83931 | BDVDB-2026-387402 Detail

MicrosoftWindows 11 version 23H2

Description#

Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

No public exploit known

7.8 High

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 22.9.

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Memory Corruption

No specific action is recorded in the source data. Check the references for vendor guidance.

Not available

7.8 High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

Not available

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).