Vulnerability-Lookup

CNVD-2026-12556

Vulnerability from cnvd - Published: 2026-03-04

Title

Microsoft Hyper-V缓冲区溢出漏洞

Description

Microsoft Hyper-V是美国微软（Microsoft）公司的一个应用程序。一种系统管理程序虚拟化技术，能够实现桌面虚拟化。 Microsoft Hyper-V存在缓冲区溢出漏洞。该漏洞源于未能正确验证输入数据的长度大小，攻击者可利用该漏洞可以远程执行代码。

Severity

中

Patch Name

Microsoft Hyper-V缓冲区溢出漏洞的补丁

Patch Description

Microsoft Hyper-V是美国微软（Microsoft）公司的一个应用程序。一种系统管理程序虚拟化技术，能够实现桌面虚拟化。 Microsoft Hyper-V存在缓冲区溢出漏洞。该漏洞源于未能正确验证输入数据的长度大小，攻击者可利用该漏洞可以远程执行代码。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21247

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-21247

Impacted products

Name
['Microsoft Windows Server 2016', 'Microsoft Windows Server 2019', 'Microsoft Windows Server 2022', 'Microsoft Window 10 22H2', 'Microsoft Window 10 21H2', 'Microsoft Window 10 1809', 'Microsoft Window 10 1607', 'Microsoft Window 11 23H2', 'Microsoft Window 11 24H2', 'Microsoft Windows Server 2025', 'Microsoft Window 11 25H2']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-21247",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-21247"
    }
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  "products": {
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  "submitTime": "2026-03-02",
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}

CVE-2026-21247 (GCVE-0-2026-21247)

Vulnerability from cvelistv5 – Published: 2026-02-10 17:51 – Updated: 2026-04-10 13:21

Title

Windows Hyper-V Remote Code Execution Vulnerability

Summary

Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally.

Severity ?

7.3 (High)


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

CWE

CWE-20 - Improper Input Validation
CWE-122 - Heap-based Buffer Overflow
CWE-125 - Out-of-bounds Read

Assigner

microsoft

References

URL

Tags

https://msrc.microsoft.com/update-guide/vulnerabi…

vendor-advisorypatch

Impacted products

Vendor

Product

Version

Microsoft

Windows 10 Version 1607

Affected: 10.0.14393.0 , < 10.0.14393.8868 (custom)

Microsoft	Windows 10 Version 1809	Affected: 10.0.17763.0 , < 10.0.17763.8389 (custom)
Microsoft	Windows 10 Version 21H2	Affected: 10.0.19044.0 , < 10.0.19044.6937 (custom)
Microsoft	Windows 10 Version 22H2	Affected: 10.0.19045.0 , < 10.0.19045.6937 (custom)
Microsoft	Windows 11 version 22H3	Affected: 10.0.22631.0 , < 10.0.22631.6649 (custom)
Microsoft	Windows 11 Version 23H2	Affected: 10.0.22631.0 , < 10.0.22631.6649 (custom)
Microsoft	Windows 11 Version 24H2	Affected: 10.0.26100.0 , < 10.0.26100.7840 (custom)
Microsoft	Windows 11 Version 25H2	Affected: 10.0.26200.0 , < 10.0.26200.7840 (custom)
Microsoft	Windows 11 version 26H1	Affected: 10.0.28000.0 , < 10.0.28000.1575 (custom)
Microsoft	Windows 11 Version 26H1	Affected: 10.0.28000.0 , < 10.0.28000.1575 (custom)
Microsoft	Windows Server 2016	Affected: 10.0.14393.0 , < 10.0.14393.8868 (custom)
Microsoft	Windows Server 2016 (Server Core installation)	Affected: 10.0.14393.0 , < 10.0.14393.8868 (custom)
Microsoft	Windows Server 2019	Affected: 10.0.17763.0 , < 10.0.17763.8389 (custom)
Microsoft	Windows Server 2019 (Server Core installation)	Affected: 10.0.17763.0 , < 10.0.17763.8389 (custom)
Microsoft	Windows Server 2022	Affected: 10.0.20348.0 , < 10.0.20348.4773 (custom)
Microsoft	Windows Server 2022, 23H2 Edition (Server Core installation)	Affected: 10.0.25398.0 , < 10.0.25398.2149 (custom)
Microsoft	Windows Server 2025	Affected: 10.0.26100.0 , < 10.0.26100.32370 (custom)
Microsoft	Windows Server 2025 (Server Core installation)	Affected: 10.0.26100.0 , < 10.0.26100.32370 (custom)

Date Public ?

2026-02-10 16:00

Show details on NVD website

JSON

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  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2026-21247",
    "datePublished": "2026-02-10T17:51:20.245Z",
    "dateReserved": "2025-12-11T21:02:05.736Z",
    "dateUpdated": "2026-04-10T13:21:07.052Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2026-12556

CVE-2026-21247 (GCVE-0-2026-21247)

Tags

Sightings

Nomenclature