Code execution via malicious RDP server response
Published May 13, 2025 · Updated Feb 13, 2026
A heap-based buffer overflow in Microsoft Windows Remote Desktop allows remote attackers controlling an RDP server to execute code. Microsoft has not disclosed the exact parser, message field, or length-calculation error that corrupts the client's heap. Exploitation requires user interaction: the affected client must connect to an attacker-controlled Remote Desktop server, after which code runs in the client's security context.
Summary
What happened
A heap-based buffer overflow in Microsoft Windows Remote Desktop allows remote attackers controlling an RDP server to execute code. Microsoft has not disclosed the exact parser, message field, or length-calculation error that corrupts the client's heap. Exploitation requires user interaction: the affected client must connect to an attacker-controlled Remote Desktop server, after which code runs in the client's security context.
The record
- CVE
- CVE-2025-29966
- Published
- May 13, 2025
- Updated
- Feb 13, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-122, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 13, 2025CVE publishedPublication date reported by the CVE source.
- Feb 13, 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.
- Affected versionversion=10.0.10240.0 <10.0.10240.21014
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.
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Technologies
Your stack
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Your stack
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