Local disclosure of sensitive information
Published Nov 11, 2025 · Updated Feb 13, 2026
Information disclosure in Microsoft Windows Speech allows local users with low privileges to read sensitive information from affected systems. Microsoft identifies sensitive information being inserted into sent data but does not disclose the responsible component, data path, or exposed data. Exploitation requires local access and no user interaction, and the documented consequence is limited to confidentiality.
Summary
What happened
Information disclosure in Microsoft Windows Speech allows local users with low privileges to read sensitive information from affected systems. Microsoft identifies sensitive information being inserted into sent data but does not disclose the responsible component, data path, or exposed data. Exploitation requires local access and no user interaction, and the documented consequence is limited to confidentiality.
The record
- CVE
- CVE-2025-59509
- Published
- Nov 11, 2025
- Updated
- Feb 13, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-201, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 11, 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=10.0.17763.0 <10.0.17763.8027
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.
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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