Client memory disclosure via uninitialized RDP data
Published May 11, 2021 · Updated Aug 3, 2024
Information disclosure in Microsoft Windows RDP clients allows remote attackers to read uninitialized memory through a malicious server. After a targeted user connects, the server receives memory content that the client failed to initialize before transmitting it. User interaction is required, and the reported consequence is disclosure of client memory without integrity or availability impact.
Summary
What happened
Information disclosure in Microsoft Windows RDP clients allows remote attackers to read uninitialized memory through a malicious server. After a targeted user connects, the server receives memory content that the client failed to initialize before transmitting it. User interaction is required, and the reported consequence is disclosure of client memory without integrity or availability impact.
The record
- CVE
- CVE-2021-31186
- Published
- May 11, 2021
- Updated
- Aug 3, 2024
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-200, T1204
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 11, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record 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=10.0.0 <10.0.10240.18931
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
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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