Microsoft · Security update · October 14, 2025
KB5066791: October 2025 cumulative update for Windows 10 21H2
KB5066791, released October 14, 2025, fixes 98 CVEs across 6 products. 3 of them are being exploited (CVE-2025-24990); 3 on CISA KEV. Patch Radar priority: Patch now.
Patch now3 on CISA KEV1 publicly disclosed
CVEs closed
98
2 rated Critical
Exploited
3
CVE-2025-24990
Exploitation more likely
6
Microsoft's assessment
Highest EPSS
0.0651
93rd percentile
Priority of the 98 CVEs
Patch now 3
Urgent 8
High 57
Routine 30
Applies to
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Patch now | CVE-2025-24990 | Agere Windows Modem Driver | Elevation of Privilege | 7.8 | 0.0651 | KEVExploited |
| Patch now | CVE-2025-47827 | Windows Secure Boot | Security Feature Bypass | 4.6 | 0.0515 | KEVExploited |
| Patch now | CVE-2025-59230 | Windows Remote Access Connection Manager | Elevation of Privilege | 7.8 | 0.0272 | KEVExploited |
| Urgent | CVE-2025-55681 | Windows DWM | Elevation of Privilege | 7.0 | 0.0550 | More likely |
| Urgent | CVE-2016-9535 | Microsoft Graphics Component | Remote Code Execution | 4.0 | 0.0473 | Exploitation Unlikely |
| Urgent | CVE-2025-59199 | Software Protection Platform (SPP) | Elevation of Privilege | 7.8 | 0.0455 | More likely |
| Urgent | CVE-2025-55692 | Windows Error Reporting | Elevation of Privilege | 7.8 | 0.0363 | More likely |
| Urgent | CVE-2025-24052 | Agere Windows Modem Driver | Elevation of Privilege | 7.8 | 0.0254 | DisclosedMore likely |
| Urgent | CVE-2025-58722 | Windows DWM | Elevation of Privilege | 7.8 | 0.0234 | More likely |
| Urgent | CVE-2025-49708 | Microsoft Graphics Component | Elevation of Privilege | 9.9 | 0.0126 | Exploitation Less Likely |
| Urgent | CVE-2025-55680 | Windows Cloud Files Mini Filter Driver | Elevation of Privilege | 7.8 | 0.0044 | More likely |
| High | CVE-2025-59295 | Internet Explorer | Remote Code Execution | 8.8 | 0.0190 | Exploitation Less Likely |
| High | CVE-2025-54957 | Microsoft Windows Codecs Library | Remote Code Execution | 7.0 | 0.0160 | Exploitation Less Likely |
| High | CVE-2025-59254 | Windows DWM Core Library | Elevation of Privilege | 7.8 | 0.0114 | Exploitation Unlikely |
| High | CVE-2025-58726 | Windows SMB Server | Elevation of Privilege | 7.5 | 0.0104 | Exploitation Less Likely |
| High | CVE-2025-55326 | Connected Devices Platform Service (Cdpsvc) | Remote Code Execution | 7.5 | 0.0084 | Exploitation Less Likely |
| High | CVE-2025-59200 | Data Sharing Service Client | Spoofing | 7.7 | 0.0081 | Exploitation Less Likely |
| High | CVE-2025-59282 | Inbox COM Objects | Remote Code Execution | 7.0 | 0.0061 | Exploitation Unlikely |
| High | CVE-2025-58718 | Remote Desktop Client | Remote Code Execution | 8.8 | 0.0060 | Exploitation Less Likely |
| High | CVE-2025-59208 | Windows MapUrlToZone | Information Disclosure | 7.1 | 0.0050 | Exploitation Less Likely |
| High | CVE-2025-25004 | Microsoft PowerShell | Elevation of Privilege | 7.3 | 0.0049 | Exploitation Less Likely |
| High | CVE-2025-58732 | Inbox COM Objects | Remote Code Execution | 7.0 | 0.0047 | Exploitation Unlikely |
| High | CVE-2025-58735 | Inbox COM Objects | Remote Code Execution | 7.0 | 0.0047 | Exploitation Unlikely |
| High | CVE-2025-59201 | Network Connection Status Indicator (NCSI) | Elevation of Privilege | 7.8 | 0.0046 | Exploitation Less Likely |
| High | CVE-2025-64679 | Windows DWM Core Library | Elevation of Privilege | 7.8 | 0.0045 | Exploitation Less Likely |
Showing 1 to 25 of 98
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