What is CVE-2026-33821?

CVE-2026-33821 is a high-severity vulnerability in Microsoft Dynamics 365, classified under Improper Privilege Management. CVSS score: 7.7/10. Published 2026-05-12.

How severe is CVE-2026-33821?

High severity. CVSS v3 base score is 7.7 out of 10.

Privilege escalation in Microsoft Dynamics 365

CVE-2026-33821

Improper privilege management in Microsoft Dynamics 365 Customer Insights allows an authorized attacker to elevate privileges over a network.

Vulnerability class: Privilege Escalation

Published 2026-05-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

Microsoft Dynamics 365 Customer Insights Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33821?: CVE-2026-33821 is a high-severity vulnerability in Microsoft Dynamics 365, classified under Improper Privilege Management. CVSS score: 7.7/10. Published 2026-05-12.
How severe is CVE-2026-33821?: High severity. CVSS v3 base score is 7.7 out of 10.