CVE-2026-21248
Windows Hyper-V Remote Code Execution Vulnerability
HIGH 7.3EPSS 1.3%
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
- Affected
- Microsoft · Windows 10 Version 1607 · Windows 10 Version 1809 · Windows 10 Version 21H2 · Windows 10 Version 22H2 · Windows 11 version 22H3 · Windows 11 Version 23H2
- CVSS v3.1 MICROSOFT
- 7.3 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H - EPSS
- 1.33% chance of exploitation in the next 30 days, 71st percentile
- Published
- 2026-02-10
- Updated
- 2026-08-19