CVE-2025-47999

Windows Hyper-V Denial of Service Vulnerability

Severity Score

6.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.

*Credits: N/A

CVSS Scores

Microsoftv3.1 6.8

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2025-05-14 CVE Reserved
2025-07-08 CVE Published
2025-07-21 CVE Updated
2025-07-21 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-820: Missing Synchronization

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47999	2025-07-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"		Windows 10 Version 1809 Search vendor "Microsoft" for product "Windows 10 Version 1809"				>= 10.0.17763.0 < 10.0.17763.7558 Search vendor "Microsoft" for product "Windows 10 Version 1809" and version " >= 10.0.17763.0 < 10.0.17763.7558"		en		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2019 Search vendor "Microsoft" for product "Windows Server 2019"				>= 10.0.17763.0 < 10.0.17763.7558 Search vendor "Microsoft" for product "Windows Server 2019" and version " >= 10.0.17763.0 < 10.0.17763.7558"		en		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2019 (Server Core Installation) Search vendor "Microsoft" for product "Windows Server 2019 (Server Core Installation)"				>= 10.0.17763.0 < 10.0.17763.7558 Search vendor "Microsoft" for product "Windows Server 2019 (Server Core Installation)" and version " >= 10.0.17763.0 < 10.0.17763.7558"		en		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2022 Search vendor "Microsoft" for product "Windows Server 2022"				>= 10.0.20348.0 < 10.0.20348.3932 Search vendor "Microsoft" for product "Windows Server 2022" and version " >= 10.0.20348.0 < 10.0.20348.3932"		en		Affected
Microsoft Search vendor "Microsoft"		Windows 10 Version 21H2 Search vendor "Microsoft" for product "Windows 10 Version 21H2"				>= 10.0.19044.0 < 10.0.19044.6093 Search vendor "Microsoft" for product "Windows 10 Version 21H2" and version " >= 10.0.19044.0 < 10.0.19044.6093"		en		Affected
Microsoft Search vendor "Microsoft"		Windows 11 Version 22H2 Search vendor "Microsoft" for product "Windows 11 Version 22H2"				>= 10.0.22621.0 < 10.0.22621.5624 Search vendor "Microsoft" for product "Windows 11 Version 22H2" and version " >= 10.0.22621.0 < 10.0.22621.5624"		en		Affected
Microsoft Search vendor "Microsoft"		Windows 10 Version 22H2 Search vendor "Microsoft" for product "Windows 10 Version 22H2"				>= 10.0.19045.0 < 10.0.19045.6093 Search vendor "Microsoft" for product "Windows 10 Version 22H2" and version " >= 10.0.19045.0 < 10.0.19045.6093"		en		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2025 (Server Core Installation) Search vendor "Microsoft" for product "Windows Server 2025 (Server Core Installation)"				>= 10.0.26100.0 < 10.0.26100.4652 Search vendor "Microsoft" for product "Windows Server 2025 (Server Core Installation)" and version " >= 10.0.26100.0 < 10.0.26100.4652"		en		Affected
Microsoft Search vendor "Microsoft"		Windows 11 Version 22H3 Search vendor "Microsoft" for product "Windows 11 Version 22H3"				>= 10.0.22631.0 < 10.0.22631.5624 Search vendor "Microsoft" for product "Windows 11 Version 22H3" and version " >= 10.0.22631.0 < 10.0.22631.5624"		en		Affected
Microsoft Search vendor "Microsoft"		Windows 11 Version 23H2 Search vendor "Microsoft" for product "Windows 11 Version 23H2"				>= 10.0.22631.0 < 10.0.22631.5624 Search vendor "Microsoft" for product "Windows 11 Version 23H2" and version " >= 10.0.22631.0 < 10.0.22631.5624"		en		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2022, 23H2 Edition (Server Core Installation) Search vendor "Microsoft" for product "Windows Server 2022, 23H2 Edition (Server Core Installation)"				>= 10.0.25398.0 < 10.0.25398.1732 Search vendor "Microsoft" for product "Windows Server 2022, 23H2 Edition (Server Core Installation)" and version " >= 10.0.25398.0 < 10.0.25398.1732"		en		Affected
Microsoft Search vendor "Microsoft"		Windows 11 Version 24H2 Search vendor "Microsoft" for product "Windows 11 Version 24H2"				>= 10.0.26100.0 < 10.0.26100.4652 Search vendor "Microsoft" for product "Windows 11 Version 24H2" and version " >= 10.0.26100.0 < 10.0.26100.4652"		en		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2025 Search vendor "Microsoft" for product "Windows Server 2025"				>= 10.0.26100.0 < 10.0.26100.4652 Search vendor "Microsoft" for product "Windows Server 2025" and version " >= 10.0.26100.0 < 10.0.26100.4652"		en		Affected
Microsoft Search vendor "Microsoft"		Windows 10 Version 1607 Search vendor "Microsoft" for product "Windows 10 Version 1607"				>= 10.0.14393.0 < 10.0.14393.8246 Search vendor "Microsoft" for product "Windows 10 Version 1607" and version " >= 10.0.14393.0 < 10.0.14393.8246"		en		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2016 Search vendor "Microsoft" for product "Windows Server 2016"				>= 10.0.14393.0 < 10.0.14393.8246 Search vendor "Microsoft" for product "Windows Server 2016" and version " >= 10.0.14393.0 < 10.0.14393.8246"		en		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2016 (Server Core Installation) Search vendor "Microsoft" for product "Windows Server 2016 (Server Core Installation)"				>= 10.0.14393.0 < 10.0.14393.8246 Search vendor "Microsoft" for product "Windows Server 2016 (Server Core Installation)" and version " >= 10.0.14393.0 < 10.0.14393.8246"		en		Affected