CVE-2025-29969 — MS-EVEN RPC Remote Code Execution Vulnerability

Executive Summary

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

Overview

7.5

CVSS HIGH

Important

MS Severity

Not Exploited

MS Exploit Status

Less Likely

MS Exploit Likelihood

Category Remote Code Execution

Weakness CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

Released May 13 2025

Last Updated May 13 2025

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.0106 — 0.61049 percentile

NVD CVSS 7.5 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

ATTACK VECTOR

Network

ATTACK COMPLEXITY

High

PRIVILEGES REQUIRED

Low

USER INTERACTION

None

SCOPE

Unchanged

CONFIDENTIALITY

High

INTEGRITY

High

AVAILABILITY

High

EXPLOIT CODE MATURITY

Unproven

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 6.5

EPSS Score

0.0106

probability of exploitation in the next 30 days

0.61049 percentile - updated 2026-07-25

View on FIRST.org

Affected Products

26 affected products

Product	KB Article	Severity	Impact	Restart Required
Windows 10 for 32-bit Systems	`5058387 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 for x64-based Systems	`5058387 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1607 for 32-bit Systems	`5058383 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1607 for x64-based Systems	`5058383 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1809 for 32-bit Systems	`5058392 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1809 for x64-based Systems	`5058392 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 21H2 for 32-bit Systems	`5058379 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 21H2 for ARM64-based Systems	`5058379 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 21H2 for x64-based Systems	`5058379 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 22H2 for 32-bit Systems	`5058379 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 22H2 for ARM64-based Systems	`5058379 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 22H2 for x64-based Systems	`5058379 (Security Update)`	Important	Remote Code Execution	Yes
Windows 11 Version 22H2 for ARM64-based Systems	`5058405 (Security Update)`	Important	Remote Code Execution	Yes
Windows 11 Version 22H2 for x64-based Systems	`5058405 (Security Update)`	Important	Remote Code Execution	Yes
Windows 11 Version 23H2 for ARM64-based Systems	`5058405 (Security Update)`	Important	Remote Code Execution	Yes
Windows 11 Version 23H2 for x64-based Systems	`5058405 (Security Update)`	Important	Remote Code Execution	Yes
Windows 11 Version 24H2 for ARM64-based Systems 5058411 (Security Update) 5058497 (SecurityHotpatchUpdate) Important Remote Code Execution 5055523 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 10.0.26100.4061 10.0.26100.3981 Yes None Windows 11 Version 24H2 for x64-based Systems 5058411 (Security Update) 5058497 (SecurityHotpatchUpdate) Important Remote Code Execution 5055523 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 10.0.26100.4061 10.0.26100.3981 Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 5058449 (Monthly Rollup) 5058429 (Security Only) Important Remote Code Execution 5055609 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.23279 Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 5058449 (Monthly Rollup) 5058429 (Security Only) Important Remote Code Execution 5055609 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.23279 Yes None Windows Server 2008 for x64-based Systems Service Pack 2 5058449 (Monthly Rollup) 5058429 (Security Only) Important Remote Code Execution 5055609 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.23279 Yes None Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 5058449 (Monthly Rollup) 5058429 (Security Only) Important Remote Code Execution 5055609 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.23279 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 5058430 (Monthly Rollup) 5058454 (Security Only) Important Remote Code Execution 5055561 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.27729 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5058430 (Monthly Rollup) 5058454 (Security Only) Important Remote Code Execution 5055561 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.27729 Yes None Windows Server 2012	`5058451 (Monthly Rollup)`	Important	Remote Code Execution	Yes
Windows Server 2012 (Server Core installation)	`5058451 (Monthly Rollup)`	Important	Remote Code Execution	Yes
Windows Server 2012 R2	`5058403 (Monthly Rollup)`	Important	Remote Code Execution	Yes
Windows Server 2012 R2 (Server Core installation)	`5058403 (Monthly Rollup)`	Important	Remote Code Execution	Yes
Windows Server 2016	`5058383 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2016 (Server Core installation)	`5058383 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2019	`5058392 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2019 (Server Core installation)	`5058392 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2022 5058385 (Security Update) 5058500 (SecurityHotpatchUpdate) Important Remote Code Execution 5055526 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 10.0.20348.3692 10.0.20348.3630 Yes None Windows Server 2022 (Server Core installation)	`5058385 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2022, 23H2 Edition (Server Core installation)	`5058384 (Security Update)`	Important	Remote Code Execution	Yes

Patches

9 patches

Article	Type	Restart
`5058387`	Security Update	Yes
`5058383`	Security Update	Yes
`5058392`	Security Update	Yes
`5058379`	Security Update	Yes
`5058405`	Security Update	Yes
`5058451`	Monthly Rollup	Yes
`5058403`	Monthly Rollup	Yes
`5058385`	Security Update	Yes
`5058384`	Security Update	Yes

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

Yarin Aharoni with SafeBreach

References

MSRC Advisory MITRE NVD