ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-40417

Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.

Published May 12, 2026 · catalog updated Aug 10, 2026 · dynamics 365 business central

Check if you run it

No confirmed exploitation is on record for CVE-2026-40417. EPSS is 0.30%. Act only if a listed version of dynamics 365 business central is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.30%
Remediation
Advisory link
Affected products
cpe microsoft/dynamics 365 business central

Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/dynamics 365 business central2024
  • cpe microsoft/dynamics 365 business central2025
  • cpe microsoft/dynamics 365 business central2026

How to fix CVE-2026-40417

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-40417. EPSS is 0.30%. Act only if a listed version of dynamics 365 business central is installed.

Which versions are affected?

Compare what you have installed with microsoft/dynamics 365 business central 2024; microsoft/dynamics 365 business central 2025; microsoft/dynamics 365 business central 2026. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1390. EPSS 0.30%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 12, 2026 · NIST NVD

    Detected

    Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.

  2. Aug 10, 2026 · NIST NVD

    Updated

    Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.

Sources

  • CVE.orgVulnerability recordCVE-2026-40417

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-40417

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-40417

    Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.