Microsoft · ServicingStack update · September 14, 2026
KB5129194: September 2026 cumulative update for Windows 11 22H2
KB5129194, released September 14, 2026, fixes 2 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
2
1 rated Critical
Exploited
0
None reported
Exploitation more likely
1
Vendor assessment
Highest EPSS
0.0035
28th percentile
Priority of the 2 CVEs
Patch now 0
Urgent 2
High 0
Routine 0
Applies to
| Product | Build after install |
|---|---|
| Windows 11 Version 26H1 for ARM64-based Systems | 28000.2956 |
| Windows 11 version 26H1 for x64-based Systems | 28000.2956 |
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Urgent | CVE-2026-85921 | Windows Secure Kernel Mode | Elevation of Privilege | 8.2 | 0.0035 | Exploitation Less Likely |
| Urgent | CVE-2026-62721 | User-Mode Power Service (UMPS) | Elevation of Privilege | 7.8 | 0.0030 | More likely |
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