What is CVE-2021-28461?

CVE-2021-28461 is a medium-severity vulnerability in Microsoft Dynamics 365, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-11.

How severe is CVE-2021-28461?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Microsoft Dynamics 365

CVE-2021-28461

Dynamics Finance and Operations Cross-site Scripting Vulnerability

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-05-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (69.9th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Microsoft Dynamics 365
Microsoft Dynamics 365 For Finance And Operations — versions 10.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28461 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-28461?: CVE-2021-28461 is a medium-severity vulnerability in Microsoft Dynamics 365, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-11.
How severe is CVE-2021-28461?: Medium severity. CVSS v3 base score is 6.1 out of 10.