CVE-2024-26182Public exploit

Privilege escalation via registry subkey use-after-free

Published Mar 12, 2024 · Updated May 3, 2025

Use-after-free in the Windows Kernel in affected Windows 10 and Server builds allows local users to gain elevated privileges. CmpAddSubKeyEx fails to update a hive subkey-list cell index when CmpAddSubKeyToList reallocates the cell and then returns an error, leaving a dangling reference. Low-privileged local access is required, and successful exploitation grants control at elevated privilege without user interaction.

CVSS severity7.8
High
EPSS probability5.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Windows Kernel in affected Windows 10 and Server builds allows local users to gain elevated privileges. CmpAddSubKeyEx fails to update a hive subkey-list cell index when CmpAddSubKeyToList reallocates the cell and then returns an error, leaving a dangling reference. Low-privileged local access is required, and successful exploitation grants control at elevated privilege without user interaction.

The record

CVE
CVE-2024-26182
Published
Mar 12, 2024
Updated
May 3, 2025
Vendor
Microsoft
Product
Windows Server 2019
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 12, 2024CVE publishedPublication date reported by the CVE source.
  2. May 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=10.0.17763.0 <10.0.17763.5576

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.5576
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.6796
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.4170
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.6796
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.4170
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.5576
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.6796
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.5576; version=10.0.17763.0 <10.0.17763.5576

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/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 exploitPublished

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

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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