What is CVE-2021-42316?

CVE-2021-42316 is a high-severity vulnerability in Microsoft Dynamics 365. CVSS score: 8.8/10. Published 2021-11-10.

How severe is CVE-2021-42316?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Microsoft Dynamics 365

CVE-2021-42316

Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability

Published 2021-11-10 · last modified 2026-08-19.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.023 (83.5th percentile), scored 2026-10-23.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000

Affected products

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

References

af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)
msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42316 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2021-42316?: CVE-2021-42316 is a high-severity vulnerability in Microsoft Dynamics 365. CVSS score: 8.8/10. Published 2021-11-10.
How severe is CVE-2021-42316?: High severity. CVSS v3 base score is 8.8 out of 10.