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CVE-2026-42898

CRITICAL
9.9NVD

Summary

generated automatically from NVD data

CVE-2026-42898 is a code injection flaw (CWE-94) in Microsoft Dynamics 365 (on-premises), caused by improper control of code generation. An authorized attacker can exploit it over a network to execute arbitrary code. NVD rates it 9.9 (CRITICAL, CVSS v3.1) with the vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H, and lists 9.1.45.11 as the affected version bound.

NVD description

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

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EPSS · FIRST.org

0.99%probability of exploitation in the next 30 days

Higher than 61% of scored CVEs

EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-16, recomputed daily by FIRST.org.

In-depth analysis on cveo.tech

We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.

CVSS v3.1 Score

9.9
/ 10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Information

Published
12 mai 2026
Updated
17 juin 2026
Status
Analyzed
Source
secure@microsoft.com

Affected products

microsoft dynamics 365
Versions : 9.1.45.11

Weaknesses (CWE)

CWE-94

Similar CVEs

Other vulnerabilities of type CWE-94

…

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