Microsoft · Security update · January 14, 2025
KB5049981: January 2025 cumulative update for Windows 10 21H2
KB5049981, released January 14, 2025, fixes 121 CVEs across 6 products. 3 of them are being exploited (CVE-2025-21333); 3 on CISA KEV. Patch Radar priority: Patch now.
Patch now3 on CISA KEV2 publicly disclosed
CVEs closed
121
5 rated Critical
Exploited
3
CVE-2025-21333
Exploitation more likely
11
Microsoft's assessment
Highest EPSS
0.7437
99th percentile
Priority of the 121 CVEs
Patch now 3
Urgent 15
High 57
Routine 46
Applies to
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Patch now | CVE-2025-21333 | Windows Hyper-V NT Kernel Integration VSP | Elevation of Privilege | 7.8 | 0.1007 | KEVExploited |
| Patch now | CVE-2025-21334 | Windows Hyper-V NT Kernel Integration VSP | Elevation of Privilege | 7.8 | 0.0157 | KEVExploited |
| Patch now | CVE-2025-21335 | Windows Hyper-V NT Kernel Integration VSP | Elevation of Privilege | 7.8 | 0.0140 | KEVExploited |
| Urgent | CVE-2025-21298 | Windows OLE | Remote Code Execution | 9.8 | 0.7437 | More likely |
| Urgent | CVE-2025-21269 | Windows MapUrlToZone | Security Feature Bypass | 4.3 | 0.0450 | More likely |
| Urgent | CVE-2025-21219 | Windows MapUrlToZone | Security Feature Bypass | 4.3 | 0.0295 | More likely |
| Urgent | CVE-2025-21189 | Windows MapUrlToZone | Security Feature Bypass | 4.3 | 0.0291 | More likely |
| Urgent | CVE-2025-21299 | Windows Kerberos | Security Feature Bypass | 7.1 | 0.0223 | More likely |
| Urgent | CVE-2025-21268 | Windows MapUrlToZone | Security Feature Bypass | 4.3 | 0.0195 | More likely |
| Urgent | CVE-2025-21307 | Reliable Multicast Transport Driver (RMCAST) | Remote Code Execution | 9.8 | 0.0194 | Exploitation Less Likely |
| Urgent | CVE-2025-21295 | Windows SPNEGO Extended Negotiation | Remote Code Execution | 8.1 | 0.0163 | Exploitation Less Likely |
| Urgent | CVE-2025-21328 | Windows MapUrlToZone | Security Feature Bypass | 4.3 | 0.0149 | More likely |
| Urgent | CVE-2025-21329 | Windows MapUrlToZone | Security Feature Bypass | 4.3 | 0.0149 | More likely |
| Urgent | CVE-2025-21314 | Windows SmartScreen | Spoofing | 6.5 | 0.0139 | More likely |
| Urgent | CVE-2025-21294 | Microsoft Digest Authentication | Remote Code Execution | 8.1 | 0.0123 | Exploitation Less Likely |
| Urgent | CVE-2025-21210 | Windows Virtual Trusted Platform Module | Information Disclosure | 4.2 | 0.0112 | More likely |
| Urgent | CVE-2025-21292 | Microsoft Windows Search Component | Elevation of Privilege | 8.8 | 0.0083 | More likely |
| Urgent | CVE-2025-21296 | BranchCache | Remote Code Execution | 7.5 | 0.0079 | Exploitation Less Likely |
| High | CVE-2025-21285 | Windows Message Queuing | Denial of Service | 7.5 | 0.5616 | Exploitation Less Likely |
| High | CVE-2025-21277 | Windows Message Queuing | Denial of Service | 7.5 | 0.3906 | Exploitation Less Likely |
| High | CVE-2025-21293 | Active Directory Domain Services | Elevation of Privilege | 8.8 | 0.1499 | Exploitation Less Likely |
| High | CVE-2025-21230 | Windows Message Queuing | Denial of Service | 7.5 | 0.0272 | Exploitation Less Likely |
| High | CVE-2025-21231 | IP Helper | Denial of Service | 7.5 | 0.0263 | Exploitation Less Likely |
| High | CVE-2025-21251 | Windows Message Queuing | Denial of Service | 7.5 | 0.0263 | Exploitation Less Likely |
| High | CVE-2025-21300 | Windows UPnP Device Host | Denial of Service | 7.5 | 0.0257 | Exploitation Less Likely |
Showing 1 to 25 of 121
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