CVE-2024-30099

Local privilege escalation via system-file TOCTOU race

Published Jun 11, 2024 · Updated Aug 10, 2026

A TOCTOU race in the Microsoft Windows kernel allows local users with low privileges to elevate privileges on affected Windows systems. During exploitation, a user races system-file recreation, causing a privileged callback to open a crafted file and launch a privileged shell. Exploitation requires local low-privileged access, no user interaction, and precise race timing; successful execution gains elevated control.

CVSS severity7.0
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A TOCTOU race in the Microsoft Windows kernel allows local users with low privileges to elevate privileges on affected Windows systems. During exploitation, a user races system-file recreation, causing a privileged callback to open a crafted file and launch a privileged shell. Exploitation requires local low-privileged access, no user interaction, and precise race timing; successful execution gains elevated control.

The record

CVE
CVE-2024-30099
Published
Jun 11, 2024
Updated
Aug 10, 2026
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-367, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.10240.0 <10.0.10240.20680

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.20680
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.5936
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.7070
Microsoft · Windows 11 version 21H2version=10.0.22000.0 <10.0.22000.3019
Microsoft · Windows 10 Version 21H2version=10.0.19044.0 <10.0.19044.4529
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.950
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.7070
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.4529
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.5936
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.3737
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.3737
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.7070
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.2527
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.5936; version=10.0.17763.0 <10.0.17763.5936

Published CVSS scores

7.0Microsoft CorporationCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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