What is CVE-2023-21572?

CVE-2023-21572 is a medium-severity vulnerability in Microsoft Dynamics 365, classified under Cross-site Scripting. CVSS score: 6.5/10. Published 2023-02-14.

How severe is CVE-2023-21572?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XSS in Microsoft Dynamics 365

CVE-2023-21572

Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-02-14 · last modified 2026-08-19.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.006 (47.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Microsoft Dynamics 365
Microsoft Dynamics 365 (On-Premises) Version 9.0 — versions 9.0.0
Microsoft Dynamics 365 (On-Premises) Version 9.1 — versions 9.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21572 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-21572?: CVE-2023-21572 is a medium-severity vulnerability in Microsoft Dynamics 365, classified under Cross-site Scripting. CVSS score: 6.5/10. Published 2023-02-14.
How severe is CVE-2023-21572?: Medium severity. CVSS v3 base score is 6.5 out of 10.