CVE-2024-38067Network attack vector

Unauthenticated service interruption via resource exhaustion

Published Jul 9, 2024 · Updated Feb 10, 2026

Resource exhaustion in Microsoft Windows Server's OCSP service allows remote attackers to interrupt certificate-status responses over the network. Microsoft identifies uncontrolled resource consumption in the Online Responder service but has not published the request pattern or resource mishandling that triggers exhaustion. An unauthenticated network path to an installed and configured Online Responder is required, and successful exploitation affects service availability only.

CVSS severity7.5
High
EPSS probability2.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Microsoft Windows Server's OCSP service allows remote attackers to interrupt certificate-status responses over the network. Microsoft identifies uncontrolled resource consumption in the Online Responder service but has not published the request pattern or resource mishandling that triggers exhaustion. An unauthenticated network path to an installed and configured Online Responder is required, and successful exploitation affects service availability only.

The record

CVE
CVE-2024-38067
Published
Jul 9, 2024
Updated
Feb 10, 2026
Vendor
Microsoft
Product
Windows Server 2019
Classifications
CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 10, 2026Record 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=10.0.17763.0 <10.0.17763.6054

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.6054
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.7159
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.24975
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.24975
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1009
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.7159
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.27219
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.27219
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.22074
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.6054
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.22769
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.2582
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.22074
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.22769

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
T1499Endpoint Denial of Service

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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