PT-2026-40263 · Microsoft · Dynamics 365

Published 2026-05-12 · Updated 2026-05-17 · CVE-2026-42898

Positive Technologies (AI Summary)

CVSS v3.1

9.9

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Microsoft Dynamics 365 (on-premises) (affected versions not specified)

Description Improper control of code generation in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network. This is a code injection issue, which occurs when an application sends untrusted data to an interpreter as part of a command or query.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

BDU:2026-06759

CVE-2026-42898

Affected Products

Dynamics 365

References · 8

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42898 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06759 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-42898 · Security Note
• https://twitter.com/lyrie_ai/status/2055819366823014854 · Twitter Post
• https://reddit.com/r/pwnhub/comments/1tbxlvh/major_security_flaws_discovered_in_windows · Reddit Post
• https://reddit.com/r/TheSailor/comments/1te2adz/windows_dns_client_vulnerability_cve202641096 · Reddit Post
• https://t.me/CVEtracker/53529 · Telegram Post
• https://twitter.com/OrizonCyber/status/2054305665338806612 · Twitter Post