CVE-2024-43532Public exploitNetwork attack vector

Privilege escalation via insecure RPC transport fallback

Published Oct 8, 2024 · Updated Aug 19, 2026

Elevation of privilege in Microsoft Windows Remote Registry clients allows remote authenticated users to relay NTLM credentials over RPC. BaseBindToMachine falls back from SMB named pipes to other RPC transports and sets RPC_C_AUTHN_LEVEL_CONNECT, which does not protect connection authenticity or integrity. Exploitation requires a caller that uses the affected WinReg API and an attacker-controlled fallback path; relayed credentials can obtain an AD CS certificate and domain access.

CVSS severity8.8
High
EPSS probability11.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Elevation of privilege in Microsoft Windows Remote Registry clients allows remote authenticated users to relay NTLM credentials over RPC. BaseBindToMachine falls back from SMB named pipes to other RPC transports and sets RPC_C_AUTHN_LEVEL_CONNECT, which does not protect connection authenticity or integrity. Exploitation requires a caller that uses the affected WinReg API and an attacker-controlled fallback path; relayed credentials can obtain an AD CS certificate and domain access.

The record

CVE
CVE-2024-43532
Published
Oct 8, 2024
Updated
Aug 19, 2026
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-636, T1557
Attack vector
network
Privileges
authenticated

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

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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=10.0.10240.0 <10.0.10240.20796

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.20796
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 11, version 24H2version=10.0.26100.0 <10.0.26100.2033
Microsoft · Windows 11 version 21H2version=10.0.22000.0 <10.0.22000.3260
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 10 Version 21H2version=10.0.19043.0 <10.0.19044.5011
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 11 Version 22H3version=10.0.22631.0 <10.0.22631.4317
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 10 Version 22H2version=10.0.19045.0 <10.0.19045.5011
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 11 Version 23H2version=10.0.22631.0 <10.0.22631.4317
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.4317
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.7428
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 10 Version 1809version=10.0.17763.0 <10.0.17763.6414
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

8.8Microsoft CorporationCVSS:3.1/AV:N/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

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-636Not Failing Securely ('Failing Open')
T1557Adversary-in-the-Middle

Public exploit references

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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