Authenticated storage interruption via undisclosed CSV flaw
Published Apr 15, 2022 · Updated Dec 9, 2025
Denial of service in Microsoft Windows Server Cluster Shared Volumes allows remote authenticated users to interrupt shared storage access. Microsoft identifies Cluster Shared Volumes as the affected component but has not published the malformed request or internal operation that triggers the failure. Reachability requires authenticated network access to a server using CSV, and successful exploitation disrupts availability without reported data disclosure or modification.
Summary
What happened
Denial of service in Microsoft Windows Server Cluster Shared Volumes allows remote authenticated users to interrupt shared storage access. Microsoft identifies Cluster Shared Volumes as the affected component but has not published the malformed request or internal operation that triggers the failure. Reachability requires authenticated network access to a server using CSV, and successful exploitation disrupts availability without reported data disclosure or modification.
The record
- CVE
- CVE-2022-26784
- Published
- Apr 15, 2022
- Updated
- Dec 9, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- T1499.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 15, 2022CVE publishedPublication date reported by the CVE source.
- Dec 9, 2025Record 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=10.0.17763.0 <10.0.17763.2803
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