What is the CVSS score of CVE-2026-42898?

CVE-2026-42898 has a CVSS 3.1 base score of 9.9 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Is there a patch available for CVE-2026-42898?

Yes, a patch is available for CVE-2026-42898. Update the affected software to the latest version immediately.

Microsoft CVE-2026-42898

EUVD-2026-29718 CRITICAL

Code Injection (CWE-94)

2026-05-12 microsoft

GHSA-f8w6-8hpv-rrjj

Microsoft Code Injection RCE

9.9

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.9 CRITICAL

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

ENISA EUVD

HIGH

qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

May 12, 2026 - 16:59 nvd

CRITICAL 9.9

DescriptionCVE.org

Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.

Articles & Coverage 1

blog.talosintelligence.com Microsoft May 2026 Patch Tuesday: 31 Critical RCE Vulnerabilities Including Windows, Office, Azure May 12, 2026

Analysis

Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.