CVE-2026-42833ImportantRevised 13 May
Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability
Assessment
Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.
- Severity
- Important
- CVSS base score
- 9.1CVSS:3.1/
AV:N/ AC:L/ PR:H/ UI:N/ S:C/ C:H/ I:H/ A:H/ E:U/ RL:O/ RC:C - Impact
- Remote Code Execution
- EPSS, next 30 days
- 0.9%Higher than 59.2% of scored CVEs · FIRST model run 29 Sep 2026 · about EPSS
- Public exploit code
- No Nuclei template lists it
- Exploitability
- Exploitation Less Likely
- Publicly disclosed
- No
- Customer action
- Required: apply the update
- Component
- Microsoft Dynamics 365 (on-premises)
- Weakness
- CWE-250: Execution with Unnecessary Privileges
- Issued by
- Microsoft
- Published
- 12 May 2026 · May 2026
- Last revised
- 13 May 2026Updated the fixed version number. This is an informational change only.
Updates that fix it
1 KB| KB | Type | Restart | Applies to | Other CVEs |
|---|---|---|---|---|
| KB5078943 | Security Update | — | Microsoft Dynamics 365 (on-premises) version 9.1 | All CVEs in KB5078943 |