What is CVE-2026-42833?

CVE-2026-42833 is a critical-severity vulnerability in Microsoft Dynamics_365, classified under CWE-250. CVSS score: 9.1/10. Published 2026-05-12.

How severe is CVE-2026-42833?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Microsoft Dynamics_365

CVE-2026-42833

Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.

EPSS: 0.001 (26.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Microsoft Dynamics_365
Microsoft Dynamics 365 (On-premises) Version 9.1 — versions 9.0

Weakness classification (CWE)

CWE-250

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42833?: CVE-2026-42833 is a critical-severity vulnerability in Microsoft Dynamics_365, classified under CWE-250. CVSS score: 9.1/10. Published 2026-05-12.
How severe is CVE-2026-42833?: Critical severity. CVSS v3 base score is 9.1 out of 10.