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CVE-2026-21244

🗓️ 11 Feb 2026 19:44:44Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 17 Views

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

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-21244
10 Feb 202617:51
–attackerkb
bdu_fstec
BDU FSTEC
Hyper-V Component Code Execution
13 Feb 202600:00
–bdu_fstec
circl
Circl
CVE-2026-21244
10 Feb 202617:30
–circl
cnnvd
CNNVD
Microsoft Hyper-V security vulnerabilities
10 Feb 202600:00
–cnnvd
cve
CVE
CVE-2026-21244
10 Feb 202617:51
–cve
cvelist
Cvelist
CVE-2026-21244 Windows Hyper-V Remote Code Execution Vulnerability
10 Feb 202617:51
–cvelist
exploitdb
Exploit DB
Windows 11 25H2 - Heap Overflow
30 Apr 202600:00
–exploitdb
jvn
Japan Vulnerability Notes
Security information for Hitachi Disk Array Systems
31 Mar 202606:53
–jvn
mskb
Microsoft KB
February 10, 2026—KB5075897 (OS Build 25398.2149)
10 Feb 202616:00
–mskb
mskb
Microsoft KB
February 10, 2026—KB5075899 (OS Build 26100.32370)
10 Feb 202616:00
–mskb
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18 Feb 2026 01:40Current
7.8High risk
Vulners AI Score7.8
CVSS 3.17.3
EPSS0.01327
SSVC
17