KB5122106
Security update fixing 8 CVEs
0Windows versions
8CVEs fixed · 0 critical
0Exploited or in CISA KEV
0Open known issues affecting it
—Restart 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
8 Microsoft CVEs · most urgent first| CVE | Vulnerability | Severity | CVSS | EPSS | Impact | Status |
|---|---|---|---|---|---|---|
| CVE-2026-62886 | .NET Elevation of Privilege Vulnerability.NET | Important | 7.8 | 0.5% | Elevation of Privilege | Revised 17 Aug |
| CVE-2026-62909 | .NET Elevation of Privilege Vulnerability.NET | Important | 7.8 | 0.3% | Elevation of Privilege | |
| CVE-2026-70354 | .NET Core Remote Code Execution Vulnerability.NET | Important | 7.8 | 0.4% | Remote Code Execution | Revised 13 Aug |
| CVE-2026-62898 | Microsoft QUIC Information Disclosure VulnerabilityMicrosoft QUIC | Important | 7.5 | 1.0% | Information Disclosure | Revised 13 Aug |
| CVE-2026-62901 | .NET Denial of Service Vulnerability.NET | Important | 7.5 | 1.2% | Denial of Service | |
| CVE-2026-62897 | .NET Framework Remote Code Execution Vulnerability.NET Framework | Important | 7.0 | 0.4% | Remote Code Execution | Revised 13 Aug |
| CVE-2026-62899 | .NET Security Feature Bypass Vulnerability.NET | Important | 5.9 | 0.7% | Security Feature Bypass | |
| CVE-2026-62900 | .NET Information Disclosure Vulnerability.NET | Important | 5.9 | 0.7% | Information Disclosure |