Microsoft · Security update · August 11, 2026
KB5129241: August 2026 security update
KB5129241, released August 11, 2026, fixes 1 CVE across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
1
None rated Critical
Exploited
0
None reported
Exploitation more likely
1
Microsoft's assessment
Highest EPSS
0.0030
22nd percentile
Applies to
| Product |
|---|
| Windows 11 Version 24H2 for ARM64-based Systems |
| Windows 11 Version 24H2 for x64-based Systems |
| Windows 11 Version 25H2 for ARM64-based Systems |
| Windows 11 Version 25H2 for x64-based Systems |
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Urgent | CVE-2026-62721 | User-Mode Power Service (UMPS) | Elevation of Privilege | 7.8 | 0.0030 | More likely |
Showing 1 to 1 of 1
1
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.