Remote code execution via use-after-free
Published Jan 9, 2024 · Updated Jun 17, 2025
Use-after-free in Microsoft Remote Desktop Client on affected Windows builds allows remote attackers to execute code after user interaction. Microsoft identifies the memory-lifetime defect but has not published the affected function, freed object, or crafted protocol field. Exploitation requires user interaction over a network connection; successful exploitation runs code in the client's security context.
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 the memory-lifetime defect but has not published the affected function, freed object, or crafted protocol field. Exploitation requires user interaction over a network connection; successful exploitation runs code in the client's security context.
The record
- CVE
- CVE-2024-21307
- Published
- Jan 9, 2024
- Updated
- Jun 17, 2025
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-416, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 9, 2024CVE publishedPublication date reported by the CVE source.
- Jun 17, 2025Record 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.
- Affected versionversion=10.0.10240.0 <10.0.10240.20402
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
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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