Microsoft · Security update · May 12, 2026
KB5078943: May 2026 security update
KB5078943, released May 12, 2026, fixes 3 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.
UrgentUnsupported product
CVEs closed
3
1 rated Critical
Exploited
0
None reported
Exploitation more likely
0
Microsoft's assessment
Highest EPSS
0.0119
68th percentile
Priority of the 3 CVEs
Patch now 0
Urgent 1
High 1
Routine 1
Applies to
| Product |
|---|
| Microsoft Dynamics 365 (on-premises) version 9.0 |
| Microsoft Dynamics 365 (on-premises) version 9.1 |
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Urgent | CVE-2026-42898 | Microsoft Dynamics 365 (on-premises) | Remote Code Execution | 9.9 | 0.0119 | Exploitation Unlikely |
| High | CVE-2026-42833 | Microsoft Dynamics 365 (on-premises) | Remote Code Execution | 9.1 | 0.0075 | Exploitation Less Likely |
| Routine | CVE-2026-33103 | Microsoft Dynamics 365 (on-premises) | Information Disclosure | 5.5 | 0.0022 | Exploitation Unlikely |
Showing 1 to 3 of 3
1
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.