SB2026051361 - Multiple vulnerabilities in Microsoft Dynamics 365 On-Premises

Description

This security bulletin contains information about 2 vulnerabilities.

1) Execution with unnecessary privileges (CVE-ID: CVE-2026-42833)

CWE-ID: CWE-250 - Execution with Unnecessary Privileges

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to execution with unnecessary privileges in Microsoft Dynamics 365 (on-premises). A remote administrator can execute arbitrary code on the system.

2) Code Injection (CVE-ID: CVE-2026-42898)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in Microsoft Dynamics 365 On-Premises. A remote user can execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42833
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42898