CVE-2023-38160

Heap-memory disclosure via TCP/IP use-after-free

Published Sep 12, 2023 · Updated Oct 30, 2025

Use-after-free in Windows TCP/IP on affected Windows releases allows local users to read heap memory through a crafted local interaction. TCP/IP code references memory after it has been freed, exposing contents from the reused heap allocation rather than only the intended network data. Exploitation requires low-privileged local access, needs no user interaction, and is limited to confidentiality loss in the published assessment.

CVSS severity5.5
Medium
EPSS probability0.94%
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 TCP/IP on affected Windows releases allows local users to read heap memory through a crafted local interaction. TCP/IP code references memory after it has been freed, exposing contents from the reused heap allocation rather than only the intended network data. Exploitation requires low-privileged local access, needs no user interaction, and is limited to confidentiality loss in the published assessment.

The record

CVE
CVE-2023-38160
Published
Sep 12, 2023
Updated
Oct 30, 2025
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-416, T1005
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

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 <10.0.10240.20162

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.20162
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.4851
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.6252
Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.2416
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.24462
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.24462
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.3448
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.6252
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.26713
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.26713
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.3448
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.21563
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.4851
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.2283
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.6252
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.22264
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.1970
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.4851; version=10.0.17763.0 <10.0.17763.4851
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.21563
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.22264

Published CVSS scores

5.5Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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
T1005Data from Local System

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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