Microsoft · Security update · August 11, 2026
KB5123273: August 2026 security update
KB5123273, released August 11, 2026, fixes 1 CVE across 4 products. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
1
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0019
8th 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 |
|---|---|---|---|---|---|---|
| High | CVE-2026-6726 | Windows TPM | Spoofing | 7.9 | 0.0019 | Exploitation Less Likely |
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