Physical information disclosure through out-of-bounds read
Published Jan 13, 2026 · Updated Jan 13, 2026
Out-of-bounds read in Windows NDIS across affected Windows releases allows local users with physical access to disclose information. Microsoft identifies NDIS as the affected component but has not published the specific routine, input path, or boundary-check failure behind the read. Exploitation requires low privileges and physical access to the device; the reported consequence is disclosure only, with no integrity or availability impact.
Summary
What happened
Out-of-bounds read in Windows NDIS across affected Windows releases allows local users with physical access to disclose information. Microsoft identifies NDIS as the affected component but has not published the specific routine, input path, or boundary-check failure behind the read. Exploitation requires low privileges and physical access to the device; the reported consequence is disclosure only, with no integrity or availability impact.
The record
- CVE
- CVE-2026-20936
- Published
- Jan 13, 2026
- Updated
- Jan 13, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-125
- Attack vector
- physical
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 13, 2026CVE publishedPublication date reported by the CVE source.
- Jan 13, 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 <10.0.17763.8276
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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