Local privilege escalation through undisclosed driver flaw
Published Sep 15, 2021 · Updated Aug 10, 2026
Elevation of privilege in the Windows Bind Filter Driver allows local users with low privileges to gain elevated access on affected systems. Microsoft has not disclosed the affected function or the incorrect operation performed by the driver. Exploitation requires prior local low-privilege access and can cross the existing security boundary to obtain high-impact control.
Summary
What happened
Elevation of privilege in the Windows Bind Filter Driver allows local users with low privileges to gain elevated access on affected systems. Microsoft has not disclosed the affected function or the incorrect operation performed by the driver. Exploitation requires prior local low-privilege access and can cross the existing security boundary to obtain high-impact control.
The record
- CVE
- CVE-2021-36954
- Published
- Sep 15, 2021
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-269, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 15, 2021CVE publishedPublication date reported by the CVE source.
- Aug 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 <10.0.17763.2183
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.
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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