Microsoft · Security update · April 13, 2021

KB5001389: April 2021 security update

KB5001389, released April 13, 2021, fixes 47 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

Urgent1 publicly disclosedUnsupported product
CVEs closed
47
14 rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0653
93rd percentile

Priority of the 47 CVEs

Patch now 0 Urgent 14 High 24 Routine 9

Applies to

Product
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Urgent CVE-2021-27095 Windows Media Player Remote Code Execution 7.8 0.0435 Exploitation Less Likely
Urgent CVE-2021-28333 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0254 Exploitation Less Likely
Urgent CVE-2021-28329 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28330 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28331 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28332 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28334 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28335 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28336 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28337 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28338 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28339 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28343 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
Urgent CVE-2021-28315 Windows Media Player Remote Code Execution 7.8 0.0160 Exploitation Less Likely
High CVE-2021-28439 Windows TCP/IP Denial of Service 7.5 0.0653 Exploitation Less Likely
High CVE-2021-26415 Windows Installer Elevation of Privilege 7.8 0.0357 Exploitation Less Likely
High CVE-2021-28445 Windows Network File System Remote Code Execution 8.1 0.0290 Exploitation Less Likely
High CVE-2021-28327 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0254 Exploitation Less Likely
High CVE-2021-28340 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0254 Exploitation Less Likely
High CVE-2021-28344 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0254 Exploitation Less Likely
High CVE-2021-28356 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0254 Exploitation Less Likely
High CVE-2021-28341 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
High CVE-2021-28342 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
High CVE-2021-28345 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
High CVE-2021-28346 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0247 Exploitation Less Likely
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