Security
Microsoft security updates and public advisory evidence: affected products, fixing updates, exploitation and source coverage.
Fixed by KB5129194Clear
| CVE | Vulnerability | Severity | CVSS | EPSS | Impact | Status | Fixed by |
|---|---|---|---|---|---|---|---|
| CVE-2026-85921 | Windows Secure Kernel Mode Elevation of Privilege VulnerabilityWindows Secure Kernel Mode | Critical | 8.2 | 0.3% | EoPLocal | Revised 27 Sep | KB5129194 |
Advisories
MSRC guidance without a CVE of its own · 1 advisory
Hardening changes for ReFS volumes on removable mediaStarting with Windows updates released on and after October 13, 2026, Microsoft is making hardening changes to the Resilient File System (ReFS) . This change is not enable by default until 2027. Please see Hardening changes for ReFS volumes on removable media for more information.