Local information disclosure via out-of-bounds read
Published Dec 9, 2025 · Updated Apr 16, 2026
Out-of-bounds read in Microsoft Windows Defender Firewall Service allows local users to disclose information from affected Windows builds. The service reads beyond an allocated buffer, but Microsoft has not disclosed the responsible interface, data structure, or attacker-controlled input. Exploitation requires local low-privileged access and no user interaction; the published impact is limited to reading information, with no integrity or availability effect.
Summary
What happened
Out-of-bounds read in Microsoft Windows Defender Firewall Service allows local users to disclose information from affected Windows builds. The service reads beyond an allocated buffer, but Microsoft has not disclosed the responsible interface, data structure, or attacker-controlled input. Exploitation requires local low-privileged access and no user interaction; the published impact is limited to reading information, with no integrity or availability effect.
The record
- CVE
- CVE-2025-62468
- Published
- Dec 9, 2025
- Updated
- Apr 16, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 9, 2025CVE publishedPublication date reported by the CVE source.
- Apr 16, 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=10.0.26100.0 <10.0.26100.7462
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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