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HIGH · 8.8

CVE-2026-65815

Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.

Vulnerability Description

Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MicrosoftDynamics 365>= 9.1, < 9.1.47.06

Related Weaknesses (CWE)

CWE-502

References

FAQ

What is CVE-2026-65815?

CVE-2026-65815 is a vulnerability with a CVSS score of 8.8 (HIGH). Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.

How severe is CVE-2026-65815?

CVE-2026-65815 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-65815?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Dynamics 365.