Microsoft · Security update · May 11, 2021
KB5001917: May 2021 security update
KB5001917, released May 11, 2021, fixes 7 CVEs in Microsoft SharePoint Enterprise Server 2016. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.
UrgentUnsupported product
CVEs closed
7
None rated Critical
Exploited
0
None reported
Exploitation more likely
2
Microsoft's assessment
Highest EPSS
0.5077
98th percentile
Priority of the 7 CVEs
Patch now 0
Urgent 2
High 2
Routine 3
Applies to
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Urgent | CVE-2021-28474 | Microsoft Office SharePoint | Remote Code Execution | 8.8 | 0.5077 | More likely |
| Urgent | CVE-2021-31181 | Microsoft Office SharePoint | Remote Code Execution | 8.8 | 0.2901 | More likely |
| High | CVE-2021-31172 | Microsoft Office SharePoint | Spoofing | 7.1 | 0.0181 | Exploitation Less Likely |
| High | CVE-2021-28478 | Microsoft Office SharePoint | Spoofing | 7.6 | 0.0157 | Exploitation Less Likely |
| Routine | CVE-2021-31173 | Microsoft Office SharePoint | Information Disclosure | 5.3 | 0.0208 | Exploitation Less Likely |
| Routine | CVE-2021-26418 | Microsoft Office SharePoint | Spoofing | 4.6 | 0.0124 | Exploitation Less Likely |
| Routine | CVE-2021-31171 | Microsoft Office SharePoint | Information Disclosure | 4.1 | 0.0065 | Exploitation Less Likely |
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