CVE-2024-21389: Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability

Severity: high (CVSS 7.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-02-13 · updated 2026-08-10
Weakness: CWE-79

Description

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

Affected products

Microsoft Dynamics 365 (on-premises) version 9.0: from 9.1 before 9.1.25.17 — fixed in 9.1.25.17
Microsoft Dynamics 365 (on-premises) version 9.0: from 9.0 before 9.1.25.17 — fixed in 9.1.25.17

How to fix

Upgrade to a fixed version: Microsoft Dynamics 365 (on-premises) version 9.0 9.1.25.17; Microsoft Dynamics 365 (on-premises) version 9.0 9.1.25.17. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21389
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21389

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