Race Condition Vulnerability in Windows Fundamentals by Microsoft
CVE-2025-29969
Key Information:
- Vendor
Microsoft
- Vendor
- CVE Published:
- 13 May 2025
Badges
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.

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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.
References
CVSS V3.1
Timeline
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Public PoC available
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Exploit known to exist
Vulnerability published
Vulnerability Reserved