CVE-2024-43544Network attack vector

Unauthenticated denial of service via undisclosed SCEP flaw

Published Oct 8, 2024 · Updated Aug 19, 2026

Denial of service in Microsoft Simple Certificate Enrollment Protocol allows remote attackers to interrupt affected Windows Servers. Microsoft has not published the affected code path, crafted-input condition, or whether exhaustion causes a hang, crash, or other interruption. Network reachability is sufficient; no authentication or user interaction is required, and confidentiality and integrity are unaffected.

CVSS severity7.5
High
EPSS probability2.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in Microsoft Simple Certificate Enrollment Protocol allows remote attackers to interrupt affected Windows Servers. Microsoft has not published the affected code path, crafted-input condition, or whether exhaustion causes a hang, crash, or other interruption. Network reachability is sufficient; no authentication or user interaction is required, and confidentiality and integrity are unaffected.

The record

CVE
CVE-2024-43544
Published
Oct 8, 2024
Updated
Aug 19, 2026
Vendor
Microsoft
Product
Windows Server 2019
Classifications
CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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 <10.0.17763.6414

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.6414
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.7428
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.25118
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.25118
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1189
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.7428
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.27366
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.27366
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.22221
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.6414
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.22918
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.2762
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.22221
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.22918

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo