Local privilege escalation through undisclosed filter-driver flaw
Published May 11, 2021 · Updated Aug 3, 2024
Privilege escalation in Microsoft Windows build 17763 before 17763.1935 allows local users to gain elevated privileges. The flaw is in the Container Isolation FS Filter Driver, but Microsoft has not published the faulty operation or controllable input. Exploitation requires local low-privileged access; success compromises data and service control at the elevated security context.
Summary
What happened
Privilege escalation in Microsoft Windows build 17763 before 17763.1935 allows local users to gain elevated privileges. The flaw is in the Container Isolation FS Filter Driver, but Microsoft has not published the faulty operation or controllable input. Exploitation requires local low-privileged access; success compromises data and service control at the elevated security context.
The record
- CVE
- CVE-2021-31190
- Published
- May 11, 2021
- Updated
- Aug 3, 2024
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 11, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.0 <10.0.17763.1935
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
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo