High severity8.4NVD Advisory· Published Jun 9, 2026· Updated Jun 11, 2026
CVE-2026-45641
CVE-2026-45641
Description
Out-of-bounds read in Windows Hyper-V allows an unauthorized attacker to execute code locally.
Affected products
9cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*+ 1 more
- cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*range: <10.0.19044.7417
- cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*range: <10.0.19045.7417
- cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*Range: <10.0.22631.7219
- cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*Range: <10.0.26100.8655
- cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*Range: <10.0.26200.8655
- cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*Range: <10.0.28000.2269
- cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*Range: <10.0.20348.5256
- cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*Range: <10.0.26100.32995
Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45641nvdVendor Advisory
News mentions
7- Beyond the benchmark: Advancing security at AI speedMicrosoft Security Blog · Jun 17, 2026
- Microsoft Patch Tuesday for June 2026 — Snort rules and prominent vulnerabilitiesCisco Talos Intelligence · Jun 9, 2026
- Patch Tuesday - June 2026Rapid7 Blog · Jun 9, 2026
- Microsoft June 2026 Patch Tuesday fixes 3 zero-day, 200 flawsBleepingComputer · Jun 9, 2026
- Microsoft June 2026 Patch Tuesday fixes 6 zero-days, 200 flawsBleepingComputer · Jun 9, 2026
- Microsoft Patch Tuesday June 2026 – 198 Vulnerabilities Fixed, Including 3 Zero-daysCyber Security News · Jun 9, 2026
- June 2026 Patch Tuesday: Microsoft Patches 206 Vulnerabilities Including Three Publicly Disclosed Zero-DaysCrowdStrike Blog