CVE-2024-43533Network attack vector

Remote code execution via client use-after-free

Published Oct 8, 2024 · Updated Aug 19, 2026

Use-after-free in Microsoft Remote Desktop Client on affected Windows builds allows remote attackers to execute code after user interaction. Microsoft identifies a use-after-free in the Remote Desktop Client but has not disclosed the freed object, operation, or parsing path. Exploitation requires a user to connect the vulnerable client to an attacker-controlled Remote Desktop server, after which code runs on the client machine.

CVSS severity8.8
High
EPSS probability1.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Microsoft Remote Desktop Client on affected Windows builds allows remote attackers to execute code after user interaction. Microsoft identifies a use-after-free in the Remote Desktop Client but has not disclosed the freed object, operation, or parsing path. Exploitation requires a user to connect the vulnerable client to an attacker-controlled Remote Desktop server, after which code runs on the client machine.

The record

CVE
CVE-2024-43533
Published
Oct 8, 2024
Updated
Aug 19, 2026
Vendor
Microsoft
Product
Windows 11, version 24H2
Classifications
CWE-416, T1203
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

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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=10.0.26100.0 <10.0.26100.2033

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

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 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1189
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.4317
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 Server 2022version=10.0.20348.0 <10.0.20348.2762
Microsoft · Remote Desktop client for Windows Desktopversion=1.2.0.0 <1.2.5709.0

Published CVSS scores

8.8MicrosoftCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution

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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