What is CVE-2026-40412?

CVE-2026-40412 is a critical-severity vulnerability in Microsoft Azure Orbital Spatio, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 10.0/10. Published 2026-05-22.

How severe is CVE-2026-40412?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Arbitrary file upload in Microsoft Azure Orbital Spatio

CVE-2026-40412

Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code over a network.

Vulnerability class: Unrestricted File Upload

Published 2026-05-22 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.7th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.010 · change: +0.004

Affected products

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

Azure Orbital Spatio Remote Code Execution Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-40412?: CVE-2026-40412 is a critical-severity vulnerability in Microsoft Azure Orbital Spatio, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 10.0/10. Published 2026-05-22.
How severe is CVE-2026-40412?: Critical severity. CVSS v3 base score is 10.0 out of 10.