Authenticated memory disclosure via out-of-bounds read
Published Sep 8, 2026 · Updated Sep 9, 2026
Out-of-bounds read in Microsoft Windows Program Compatibility Assistant Service allows remote authenticated users to disclose memory over a network. The service reads beyond an intended buffer while processing attacker-controlled network input; Microsoft has not identified the affected routine or protocol field. Exploitation requires low privileges and user interaction, and the documented consequence is confidentiality loss without data modification or service interruption.
Summary
What happened
Out-of-bounds read in Microsoft Windows Program Compatibility Assistant Service allows remote authenticated users to disclose memory over a network. The service reads beyond an intended buffer while processing attacker-controlled network input; Microsoft has not identified the affected routine or protocol field. Exploitation requires low privileges and user interaction, and the documented consequence is confidentiality loss without data modification or service interruption.
The record
- CVE
- CVE-2026-68874
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-125
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 9, 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 <10.0.17763.9245
What conditions does exploitation require?
What is affected?
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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