KB5121575
Security update fixing 7 CVEs
0Windows versions
7CVEs fixed · 1 critical
0Exploited or in CISA KEV
0Open known issues affecting it
YesRestart required (per MSRC)
Known issues in this update
Windows release healthNo known issues listed
Windows release health lists no issues from this KB or the update it builds on.
Issues this update resolves
No resolved issues listed
Windows release health names no issues fixed by this KB.
Security fixes
7 Microsoft CVEs · most urgent first| CVE | Vulnerability | Severity | CVSS | EPSS | Impact | Status |
|---|---|---|---|---|---|---|
| CVE-2026-62911 | Microsoft Exchange Server Elevation of Privilege VulnerabilityMicrosoft Exchange Server | Critical | 8.0 | 0.7% | Elevation of Privilege | |
| CVE-2026-62913 | Microsoft Exchange Server Remote Code Execution VulnerabilityMicrosoft Exchange Server | Important | 8.8 | 0.9% | Remote Code Execution | Revised 13 Aug |
| CVE-2026-62914 | Microsoft Exchange Server Spoofing VulnerabilityMicrosoft Exchange Server | Important | 7.3 | 0.4% | Spoofing | |
| CVE-2026-62910 | Microsoft Exchange Server Elevation of Privilege VulnerabilityMicrosoft Exchange Server | Important | 7.2 | 1.0% | Elevation of Privilege | |
| CVE-2026-62912 | Microsoft Exchange Server Denial of Service VulnerabilityMicrosoft Exchange Server | Important | 6.5 | 2.0% | Denial of Service | |
| CVE-2026-62915 | Microsoft Exchange Server Security Feature Bypass VulnerabilityMicrosoft Exchange Server | Important | 6.5 | 0.6% | Security Feature Bypass | |
| CVE-2026-65813 | Microsoft Exchange Server Elevation of Privilege VulnerabilityMicrosoft Exchange Server | Important | 6.5 | 0.9% | Elevation of Privilege | Revised 28 Aug |