CVE-2024-20663Network attack vector

Authenticated memory disclosure via untrusted pointer dereference

Published Jan 9, 2024 · Updated Jun 3, 2025

Information disclosure in Microsoft Windows Message Queuing Client allows remote authenticated users to read sensitive memory over the network. The published record maps the flaw to untrusted pointer dereference but does not identify the request handler, pointer source, or exact data returned. Exploitation requires low privileges and no user interaction, and the documented impact is limited to confidentiality without integrity or availability loss.

CVSS severityUnavailable
Unscored
EPSS probability1.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Information disclosure in Microsoft Windows Message Queuing Client allows remote authenticated users to read sensitive memory over the network. The published record maps the flaw to untrusted pointer dereference but does not identify the request handler, pointer source, or exact data returned. Exploitation requires low privileges and no user interaction, and the documented impact is limited to confidentiality without integrity or availability loss.

The record

CVE
CVE-2024-20663
Published
Jan 9, 2024
Updated
Jun 3, 2025
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-822
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 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 <10.0.10240.20402

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.20402
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.5329
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.6614
Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.2713
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.24664
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.24664
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.3930
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.643
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.6614
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.3007
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.26910
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.26910
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.3930
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.21765
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.5329
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.3007
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.3007
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.6614
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.22464
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.2227
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.5329; version=10.0.17763.0 <10.0.17763.5329
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.21765
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.22464

Published CVSS scores

5.7MicrosoftCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-822Untrusted Pointer Dereference

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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