Microsoft · Security update · April 8, 2025
KB5055519: April 2025 cumulative update for Windows 10 1809
KB5055519, released April 8, 2025, fixes 75 CVEs across 4 products. One of them is being exploited (CVE-2025-29824); 1 on CISA KEV. Patch Radar priority: Patch now.
Patch now1 on CISA KEVKnown ransomware use1 publicly disclosed
CVEs closed
75
6 rated Critical
Exploited
1
CVE-2025-29824
Exploitation more likely
6
Microsoft's assessment
Highest EPSS
0.1925
97th percentile
Priority of the 75 CVEs
Patch now 1
Urgent 8
High 50
Routine 16
Applies to
| Product | Build after install |
|---|---|
| Windows 10 Version 1809 for 32-bit Systems | 17763.7136 |
| Windows 10 Version 1809 for x64-based Systems | 17763.7136 |
| Windows Server 2019 | 17763.7136 |
| Windows Server 2019 (Server Core installation) | 17763.7136 |
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-2025-27480 | Remote Desktop Gateway Service | Remote Code Execution | 8.1 | 0.1262 | More likely |
| Urgent | CVE-2025-26670 | Windows LDAP - Lightweight Directory Access Protocol | Remote Code Execution | 8.1 | 0.1105 | More likely |
| Urgent | CVE-2025-29809 | Windows Kerberos | Security Feature Bypass | 7.1 | 0.0426 | More likely |
| Urgent | CVE-2025-26663 | Windows LDAP - Lightweight Directory Access Protocol | Remote Code Execution | 8.1 | 0.0179 | More likely |
| Urgent | CVE-2025-27482 | Remote Desktop Gateway Service | Remote Code Execution | 8.1 | 0.0165 | More likely |
| Urgent | CVE-2025-27491 | Windows Hyper-V | Remote Code Execution | 7.1 | 0.0143 | Exploitation Less 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-2025-26652 | Windows Standards-Based Storage Management Service | Denial of Service | 7.5 | 0.0235 | Exploitation Less Likely |
| High | CVE-2025-27470 | Windows Standards-Based Storage Management Service | Denial of Service | 7.5 | 0.0235 | 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-2025-27479 | Windows Kerberos | Denial of Service | 7.5 | 0.0227 | Exploitation Less Likely |
| High | CVE-2025-21174 | Windows Standards-Based Storage Management Service | Denial of Service | 7.5 | 0.0218 | Exploitation Less Likely |
| High | CVE-2025-27485 | Windows Standards-Based Storage Management Service | Denial of Service | 7.5 | 0.0216 | Exploitation Less Likely |
| High | CVE-2025-27486 | Windows Standards-Based Storage Management Service | Denial of Service | 7.5 | 0.0216 | Exploitation Less Likely |
| High | CVE-2025-26680 | Windows Standards-Based Storage Management Service | Denial of Service | 7.5 | 0.0204 | Exploitation Less Likely |
| High | CVE-2025-27477 | Windows Telephony Service | Remote Code Execution | 8.8 | 0.0161 | Exploitation Less Likely |
Showing 1 to 25 of 75
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.