CVE-2023-21570: Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-02-14 · updated 2026-08-19
Weakness: CWE-79

Description

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

Affected products

Microsoft Dynamics 365 (on-premises) version 9.0: from 9.0 before 9.0.45.11; from 9.1 before 9.1.16.20 — fixed in 9.0.45.11, 9.1.16.20
Microsoft Dynamics 365 (on-premises) version 9.0: from 9.0.0 before 9.0.45.11 — fixed in 9.0.45.11

How to fix

Upgrade to a fixed version: Microsoft Dynamics 365 (on-premises) version 9.0 9.0.45.11, 9.1.16.20; Microsoft Dynamics 365 (on-premises) version 9.0 9.0.45.11. Check the vendor advisory for mitigations.

References

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