Remote memory disclosure via out-of-bounds read
Published Sep 8, 2026 · Updated Sep 9, 2026
Out-of-bounds read in Microsoft Windows Spaceport.sys allows remote attackers to disclose memory over a network. The public record identifies the kernel storage driver and an out-of-bounds read, but Microsoft has not disclosed the specific routine, input field, or missing bounds check. Exploitation requires network access and user interaction and exposes memory contents without reported modification or service interruption.
Summary
What happened
Out-of-bounds read in Microsoft Windows Spaceport.sys allows remote attackers to disclose memory over a network. The public record identifies the kernel storage driver and an out-of-bounds read, but Microsoft has not disclosed the specific routine, input field, or missing bounds check. Exploitation requires network access and user interaction and exposes memory contents without reported modification or service interruption.
The record
- CVE
- CVE-2026-72942
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-125, T1005
- Attack vector
- network
- Privileges
- unauthenticated
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?
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.
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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