Host service interruption via undisclosed Hyper-V flaw
Published Dec 15, 2021 · Updated Aug 4, 2024
Denial of service in Microsoft Windows Hyper-V allows local users with low privileges to interrupt host availability via an undisclosed vector. Microsoft has not published the vulnerable Hyper-V code path or the operation it performs incorrectly. Exploitation requires local low-privilege access and high-complexity conditions, and the published impact is limited to service interruption.
Summary
What happened
Denial of service in Microsoft Windows Hyper-V allows local users with low privileges to interrupt host availability via an undisclosed vector. Microsoft has not published the vulnerable Hyper-V code path or the operation it performs incorrectly. Exploitation requires local low-privilege access and high-complexity conditions, and the published impact is limited to service interruption.
The record
- CVE
- CVE-2021-43246
- Published
- Dec 15, 2021
- Updated
- Aug 4, 2024
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 15, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record 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=10.0.0 <10.0.17763.2366
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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