CVE-2023-38150

Local privilege escalation via undisclosed integer overflow

Published Sep 12, 2023 · Updated Oct 30, 2025

An integer overflow in the Windows Kernel in Windows 11 21H2 and 22H2 allows local users to elevate privileges. Microsoft identifies integer overflow or wraparound as the weakness but has not disclosed the affected kernel routine or arithmetic operation that overflows. A low-privileged local account is required, and exploitation does not require interaction by another user.

CVSS severity7.8
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An integer overflow in the Windows Kernel in Windows 11 21H2 and 22H2 allows local users to elevate privileges. Microsoft identifies integer overflow or wraparound as the weakness but has not disclosed the affected kernel routine or arithmetic operation that overflows. A low-privileged local account is required, and exploitation does not require interaction by another user.

The record

CVE
CVE-2023-38150
Published
Sep 12, 2023
Updated
Oct 30, 2025
Vendor
Microsoft
Product
Windows 11 version 21H2
Classifications
CWE-190, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 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=10.0.0 <10.0.22000.2416

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.2416
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.2283

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-190Integer Overflow or Wraparound
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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