What is CVE-2026-105728?

CVE-2026-105728 is a high-severity vulnerability in Microsoft Dynamics Nav 2018, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-10-13.

How severe is CVE-2026-105728?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Microsoft Dynamics Nav 2018

CVE-2026-105728

Improper authentication in Dynamics Business Central allows an unauthorized attacker to disclose information over a network.

Vulnerability class: Broken Authentication

Published 2026-10-13 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Microsoft Dynamics Nav 2018

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

Dynamics Business Central Information Disclosure Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-105728?: CVE-2026-105728 is a high-severity vulnerability in Microsoft Dynamics Nav 2018, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-10-13.
How severe is CVE-2026-105728?: High severity. CVSS v3 base score is 7.5 out of 10.