CVE-2022-21961
Published: 11 January 2022
Summary
CVE-2022-21961 is a medium-severity an unspecified weakness vulnerability in Microsoft Windows 10. Its CVSS base score is 6.8 (Medium).
Operationally, ranked in the top 19.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Windows Resilient File System (ReFS) contains a remote code execution vulnerability tracked as CVE-2022-21961. The flaw affects the ReFS component in supported Windows versions and carries a CVSS 3.1 score of 6.8 with a physical-access attack vector.
An attacker with physical access to a target system can exploit the issue without authentication or user interaction. Successful exploitation grants the ability to execute arbitrary code with high impact on confidentiality, integrity, and availability.
Microsoft published two security advisories detailing the vulnerability and associated updates. The EPSS score rose from a low baseline to a peak of 0.0625 on 2025-01-22 before receding to its current value of 0.0142, indicating a period of increased exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-27116
Vulnerability details
Windows Resilient File System (ReFS) Remote Code Execution Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.