Local information disclosure via out-of-bounds driver read
Published Sep 8, 2026 · Updated Sep 10, 2026
Out-of-bounds read in the Microsoft Windows Storage Port Driver allows local users with low privileges to disclose kernel memory. Microsoft has not disclosed the affected routine, attacker-controlled input, or bounds-checking error that causes the driver to read beyond its intended buffer. Exploitation requires local authenticated access, and the documented consequence is memory disclosure without data modification or service interruption.
Summary
What happened
Out-of-bounds read in the Microsoft Windows Storage Port Driver allows local users with low privileges to disclose kernel memory. Microsoft has not disclosed the affected routine, attacker-controlled input, or bounds-checking error that causes the driver to read beyond its intended buffer. Exploitation requires local authenticated access, and the documented consequence is memory disclosure without data modification or service interruption.
The record
- CVE
- CVE-2026-77492
- Published
- Sep 8, 2026
- Updated
- Sep 10, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-125, CAPEC-540, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 10, 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.
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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