Race Condition Vulnerability in Windows Fundamentals by Microsoft
CVE-2025-29969

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1507
Windows 10 Version 1607
Windows 10 Version 1809
Windows 10 Version 21h2
Vendor
CVE Published:
13 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-29969?

A time-of-check to time-of-use (TOCTOU) race condition in Windows Fundamentals may enable an authorized attacker to manipulate the execution of code over a network. This vulnerability arises from improper validation during concurrent operations, potentially leading to unauthorized actions within affected systems.

Affected Version(s)

Windows 10 Version 1507 32-bit Systems 10.0.10240.0 < 10.0.10240.21014

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.8066

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.7314

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

EventLogin-CVE-2025-29969
Created by SafeBreach-Labs

References

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

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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