CVE-2025-29969

HIGH

Windows Fundamentals - Code Injection

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-29969. PoCs published by SafeBreach-Labs.

AI-analyzed exploit summary This repository contains functional exploit code for CVE-2025-29969, a Time-of-check time-of-use (TOCTOU) vulnerability in the MS-EVEN protocol. The exploit allows low-privileged users to write arbitrary files to a remote machine via SMB, bypassing administrative privileges. The repository includes two scripts: one for remote file existence checks and another for weaponizing the vulnerability to upload files.

Description

Time-of-check time-of-use (toctou) race condition in Windows Fundamentals allows an authorized attacker to execute code over a network.

Exploits (1)

nomisec WORKING POC
by SafeBreach-Labs · poc
https://github.com/SafeBreach-Labs/EventLogin-CVE-2025-29969

This repository contains functional exploit code for CVE-2025-29969, a Time-of-check time-of-use (TOCTOU) vulnerability in the MS-EVEN protocol. The exploit allows low-privileged users to write arbitrary files to a remote machine via SMB, bypassing administrative privileges. The repository includes two scripts: one for remote file existence checks and another for weaponizing the vulnerability to upload files.

Classification
Working Poc 95%
Attack Type
Other
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Windows MS-EVEN protocol
Auth required
Prerequisites: Low-privileged domain user credentials · SMB share accessible to the target · Valid EVTX file for the exploit
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0102
EPSS Percentile 58.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-367
Status published
Products (17)
microsoft/windows_10_1507 < 10.0.10240.21014 (2 CPE variants)
microsoft/windows_10_1607 < 10.0.14393.8066 (2 CPE variants)
microsoft/windows_10_1809 < 10.0.17763.7314 (2 CPE variants)
microsoft/windows_10_21h2 < 10.0.19044.5854 (3 CPE variants)
microsoft/windows_10_22h2 < 10.0.19045.5854 (3 CPE variants)
microsoft/windows_11_22h2 < 10.0.22621.5335 (2 CPE variants)
microsoft/windows_11_23h2 < 10.0.22631.5335 (2 CPE variants)
microsoft/windows_11_24h2 < 10.0.26100.4061 (2 CPE variants)
microsoft/windows_server_2008
microsoft/windows_server_2008 r2 sp1
... and 7 more
Published May 13, 2025
Tracked Since Feb 18, 2026