Vulnerability · Published May 12, 2026 · Assigned by microsoft
CVE-2026-42898Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability
Critical 9.9
In plain English
A critical-severity code injection in Microsoft Dynamics 365 (on-premises) version 9.1 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)1.2%top 31.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Dynamics 365 (on-premises) version 9.1 | 9.0 – before 9.1.45.11 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability vendor-advisory, patch