7.3

CVE-2026-21247

Windows Hyper-V Remote Code Execution Vulnerability

Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Windows 10 1607 HwPlatform x64 Version < 10.0.14393.8868
Microsoft ≫ Windows 10 1809 HwPlatform x64 Version < 10.0.17763.8389
Microsoft ≫ Windows 10 21h2 HwPlatform x64 Version < 10.0.19044.6937
Microsoft ≫ Windows 10 22h2 HwPlatform x64 Version < 10.0.19045.6937
Microsoft ≫ Windows 11 23h2 HwPlatform arm64 Version < 10.0.22631.6649
Microsoft ≫ Windows 11 23h2 HwPlatform x64 Version < 10.0.22631.6649
Microsoft ≫ Windows 11 24h2 HwPlatform arm64 Version < 10.0.26100.7781
Microsoft ≫ Windows 11 24h2 HwPlatform x64 Version < 10.0.26100.7781
Microsoft ≫ Windows 11 25h2 HwPlatform arm64 Version < 10.0.26200.7781
Microsoft ≫ Windows 11 25h2 HwPlatform x64 Version < 10.0.26200.7781
Microsoft ≫ Windows Server 2016 Version < 10.0.14393.8868
Microsoft ≫ Windows Server 2019 Version < 10.0.17763.8389
Microsoft ≫ Windows Server 2022 Version < 10.0.20348.4711
Microsoft ≫ Windows Server 2022 23h2 Version < 10.0.25398.2149
Microsoft ≫ Windows Server 2025 Version < 10.0.26100.32313
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.55% 0.415
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 7.3 1.3 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21247
Vendor Advisory