Local disclosure of confidential information
Published Jan 10, 2023 · Updated Jan 1, 2025
Improper input validation in Microsoft Windows cryptographic processing allows local users to disclose confidential information. Microsoft has not published the affected cryptographic operation, input path, or validation error that exposes the information. Exploitation requires low-privileged local access, needs no user interaction, and affects confidentiality without reported data modification or service interruption.
Summary
What happened
Improper input validation in Microsoft Windows cryptographic processing allows local users to disclose confidential information. Microsoft has not published the affected cryptographic operation, input path, or validation error that exposes the information. Exploitation requires low-privileged local access, needs no user interaction, and affects confidentiality without reported data modification or service interruption.
The record
- CVE
- CVE-2023-21559
- Published
- Jan 10, 2023
- Updated
- Jan 1, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-20
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 10, 2023CVE publishedPublication date reported by the CVE source.
- Jan 1, 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=10.0.17763.0 <10.0.17763.3887
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.
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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