Local privilege escalation through undisclosed privilege management flaw
Published Nov 11, 2025 · Updated Feb 26, 2026
Improper privilege management in Microsoft Streaming Service on affected Windows releases allows local users to elevate privileges. Microsoft identifies the Streaming Service Proxy as the affected component but has not published the faulty operation or input path. Low-privileged local access is required; successful exploitation grants higher privileges and can compromise data and service operation.
Summary
What happened
Improper privilege management in Microsoft Streaming Service on affected Windows releases allows local users to elevate privileges. Microsoft identifies the Streaming Service Proxy as the affected component but has not published the faulty operation or input path. Low-privileged local access is required; successful exploitation grants higher privileges and can compromise data and service operation.
The record
- CVE
- CVE-2025-59514
- Published
- Nov 11, 2025
- Updated
- Feb 26, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-269, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 11, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 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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