CVE-2022-44683

Local privilege escalation via registry notification use-after-free

Published Dec 13, 2022 · Updated Jul 22, 2025

Use-after-free in Windows kernel registry handling allows local users on affected Windows releases to elevate privileges through crafted notifications. NtNotifyChangeMultipleKeys mishandles predefined registry-key objects, leaving a stale reference that the kernel accesses after the object is freed. A low-privileged local account with registry-notification access can trigger kernel memory corruption and obtain elevated control; remote reachability is not reported.

CVSS severity7.8
High
EPSS probability8.20%
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 Windows kernel registry handling allows local users on affected Windows releases to elevate privileges through crafted notifications. NtNotifyChangeMultipleKeys mishandles predefined registry-key objects, leaving a stale reference that the kernel accesses after the object is freed. A low-privileged local account with registry-notification access can trigger kernel memory corruption and obtain elevated control; remote reachability is not reported.

The record

CVE
CVE-2022-44683
Published
Dec 13, 2022
Updated
Jul 22, 2025
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 22, 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=10.0.10240.0 <10.0.10240.19624

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.19624
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.3770
Microsoft · Windows 10 Version 21H1version=10.0.0 <10.0.19043.2364
Microsoft · Windows 8.1version=6.3.0 <6.3.9600.20721
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.5582
Microsoft · Windows 11 version 21H2version=10.0.22000.0 <10.0.22000.1335
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.24018
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.24018
Microsoft · Windows 10 Version 21H2version=10.0.19044.0 <10.0.19044.2364
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.5582
Microsoft · Windows 10 Version 20H2version=10.0.0 <10.0.19042.2364
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.2364
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.20721
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.3770
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.993
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.5582
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.1366
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.3770; version=10.0.17763.0 <10.0.17763.3770
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.20721

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
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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