CVE-2023-38149Network attack vector

Unauthenticated system crash via TCP/IP traffic

Published Sep 12, 2023 · Updated Oct 30, 2025

Denial of service in Windows TCP/IP across affected Windows releases allows remote attackers to crash systems via network traffic. Microsoft has not disclosed the packet structure, TCP/IP processing locus, or incorrect resource operation that triggers the failure. No authentication or user interaction is required, and the documented consequence is limited to interruption of the affected system.

CVSS severity7.5
High
EPSS probability4.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Windows TCP/IP across affected Windows releases allows remote attackers to crash systems via network traffic. Microsoft has not disclosed the packet structure, TCP/IP processing locus, or incorrect resource operation that triggers the failure. No authentication or user interaction is required, and the documented consequence is limited to interruption of the affected system.

The record

CVE
CVE-2023-38149
Published
Sep 12, 2023
Updated
Oct 30, 2025
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-400
Attack vector
network
Privileges
unauthenticated

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 vectornetwork
Required privilegesunauthenticated

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 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

Published CVSS scores

7.5Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption

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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