Heap-based Buffer Overflow in Windows Hyper-V by Microsoft
CVE-2025-53155

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows Server 2022
Vendor
CVE Published:
12 August 2025

What is CVE-2025-53155?

A heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to exploit the vulnerability and gain elevated privileges locally. This flaw may enable attackers to execute arbitrary code, leading to potential system compromise. It is critical for users and administrators to apply security updates and monitor their systems for any signs of exploitation.

Affected Version(s)

Windows 10 Version 1507 x64-based Systems 10.0.10240.0 < 10.0.10240.21100

Windows 10 Version 1607 x64-based Systems 10.0.14393.0 < 10.0.14393.8330

Windows 10 Version 1809 x64-based Systems 10.0.17763.0 < 10.0.17763.7678

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-53155 : Heap-based Buffer Overflow in Windows Hyper-V by Microsoft