Microsoft · Security update · October 25, 2026
KB5133965: October 2026 security update
KB5133965, released October 25, 2026, fixes 3 CVEs across 4 products. One of them is being exploited (CVE-2026-111497); 1 on CISA KEV. Patch Radar priority: Patch now.
Patch now1 on CISA KEV1 publicly disclosed
CVEs closed
3
None rated Critical
Exploited
1
CVE-2026-111497
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.8264
99th percentile
Priority of the 3 CVEs
Patch now 1
Urgent 0
High 2
Routine 0
Applies to
| Product |
|---|
| .NET 9.0 installed on Linux |
| .NET 9.0 installed on Mac OS |
| .NET 9.0 installed on Windows |
| ASP.NET Core runtime and targeting-pack Linux tarballs (Microsoft-published) |
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Patch now | CVE-2026-111497 | .NET | 9.8 | 0.8264 | KEVDisclosedExploited | |
| High | CVE-2026-70197 | .NET | Remote Code Execution | 8.1 | 0.0079 | Exploitation Less Likely |
| High | CVE-2026-114148 | ASP.NET Core | Elevation of Privilege | 8.1 | 0.0036 | Exploitation Less Likely |
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