Local privilege escalation via heap buffer overflow
Published Oct 14, 2025 · Updated Feb 22, 2026
Heap-based buffer overflow in Microsoft Windows Connected Devices Platform Service allows local users to elevate privileges. The public Microsoft record identifies heap corruption but does not disclose the input, allocation, or copy operation that overruns the buffer. Reachability requires a local low-privilege account; successful exploitation raises that account's privileges and can compromise data and service integrity.
Summary
What happened
Heap-based buffer overflow in Microsoft Windows Connected Devices Platform Service allows local users to elevate privileges. The public Microsoft record identifies heap corruption but does not disclose the input, allocation, or copy operation that overruns the buffer. Reachability requires a local low-privilege account; successful exploitation raises that account's privileges and can compromise data and service integrity.
The record
- CVE
- CVE-2025-59191
- Published
- Oct 14, 2025
- Updated
- Feb 22, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-122, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 14, 2025CVE publishedPublication date reported by the CVE source.
- Feb 22, 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 <10.0.17763.7919
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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