Microsoft · Security update · April 8, 2025
KB5055596: April 2025 security update
KB5055596, released April 8, 2025, fixes 39 CVEs across 4 products. One of them is being exploited (CVE-2025-29824); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.
Patch now1 on CISA KEVKnown ransomware useUnsupported product
CVEs closed
39
3 rated Critical
Exploited
1
CVE-2025-29824
Exploitation more likely
3
Microsoft's assessment
Highest EPSS
0.1925
97th percentile
Priority of the 39 CVEs
Patch now 1
Urgent 4
High 25
Routine 9
Applies to
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Patch now | CVE-2025-29824 | Windows Common Log File System Driver | Elevation of Privilege | 7.8 | 0.1925 | KEVRansomwareExploited |
| Urgent | CVE-2025-26670 | Windows LDAP - Lightweight Directory Access Protocol | Remote Code Execution | 8.1 | 0.1105 | More likely |
| Urgent | CVE-2025-26663 | Windows LDAP - Lightweight Directory Access Protocol | Remote Code Execution | 8.1 | 0.0179 | More likely |
| Urgent | CVE-2025-26686 | Windows TCP/IP | Remote Code Execution | 7.5 | 0.0142 | Exploitation Less Likely |
| Urgent | CVE-2025-27727 | Windows Installer | Elevation of Privilege | 7.8 | 0.0104 | More likely |
| High | CVE-2025-21204 | Windows Update Stack | Elevation of Privilege | 7.8 | 0.0713 | Exploitation Less Likely |
| High | CVE-2025-27740 | Windows Active Directory Certificate Services | Elevation of Privilege | 8.8 | 0.0352 | Exploitation Less Likely |
| High | CVE-2025-26673 | Windows LDAP - Lightweight Directory Access Protocol | Denial of Service | 7.5 | 0.0273 | Exploitation Less Likely |
| High | CVE-2025-29810 | Active Directory Domain Services | Elevation of Privilege | 7.5 | 0.0262 | Exploitation Less Likely |
| High | CVE-2025-27469 | Windows LDAP - Lightweight Directory Access Protocol | Denial of Service | 7.5 | 0.0257 | Exploitation Less Likely |
| High | CVE-2025-26647 | Windows Kerberos | Elevation of Privilege | 8.8 | 0.0230 | Exploitation Less Likely |
| High | CVE-2025-26641 | Windows Cryptographic Services | Denial of Service | 7.5 | 0.0227 | Exploitation Less Likely |
| High | CVE-2025-27473 | Windows HTTP.sys | Denial of Service | 7.5 | 0.0227 | Exploitation Less Likely |
| High | CVE-2025-27477 | Windows Telephony Service | Remote Code Execution | 8.8 | 0.0161 | Exploitation Less Likely |
| High | CVE-2025-26669 | Windows Routing and Remote Access Service (RRAS) | Information Disclosure | 8.8 | 0.0153 | Exploitation Less Likely |
| High | CVE-2025-21205 | Windows Telephony Service | Remote Code Execution | 8.8 | 0.0139 | Exploitation Less Likely |
| High | CVE-2025-21221 | Windows Telephony Service | Remote Code Execution | 8.8 | 0.0139 | Exploitation Less Likely |
| High | CVE-2025-21222 | Windows Telephony Service | Remote Code Execution | 8.8 | 0.0139 | Exploitation Less Likely |
| High | CVE-2025-27481 | Windows Telephony Service | Remote Code Execution | 8.8 | 0.0127 | Exploitation Less Likely |
| High | CVE-2025-26668 | Windows Routing and Remote Access Service (RRAS) | Remote Code Execution | 7.5 | 0.0126 | Exploitation Less Likely |
| High | CVE-2025-26687 | Windows Win32K - GRFX | Elevation of Privilege | 7.5 | 0.0116 | Exploitation Less Likely |
| High | CVE-2025-27484 | Windows Universal Plug and Play (UPnP) Device Host | Elevation of Privilege | 7.5 | 0.0083 | Exploitation Less Likely |
| High | CVE-2025-27741 | Windows NTFS | Elevation of Privilege | 7.8 | 0.0082 | Exploitation Less Likely |
| High | CVE-2025-27737 | Windows Security Zone Mapping | Security Feature Bypass | 8.6 | 0.0078 | Exploitation Less Likely |
| High | CVE-2025-27733 | Windows NTFS | Elevation of Privilege | 7.8 | 0.0074 | Exploitation Less Likely |
Showing 1 to 25 of 39
1Next
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.