What is CVE-2026-33103?

CVE-2026-33103 is a medium-severity vulnerability in Microsoft Dynamics 365, classified under Improper Access Control. CVSS score: 5.5/10. Published 2026-04-14.

How severe is CVE-2026-33103?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Microsoft Dynamics 365

CVE-2026-33103

Improper access control in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information locally.

Published 2026-04-14 · last modified 2026-07-24.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (26.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.001

Affected products

Microsoft Dynamics 365
Microsoft Dynamics 365 (On-Premises) Version 9.0 — versions 9.0.0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

Microsoft Dynamics 365 (On-Premises) Information Disclosure Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33103?: CVE-2026-33103 is a medium-severity vulnerability in Microsoft Dynamics 365, classified under Improper Access Control. CVSS score: 5.5/10. Published 2026-04-14.
How severe is CVE-2026-33103?: Medium severity. CVSS v3 base score is 5.5 out of 10.