CVE-2026-40412Network attack vector

Unauthenticated code execution via dangerous file upload

Published May 22, 2026 · Updated May 22, 2026

Unrestricted dangerous-file upload in Microsoft Planetary Computer Pro GeoCatalog allows remote attackers to execute code over a network. Microsoft has not disclosed the upload endpoint, accepted file types, or the server-side operation that stores or executes the uploaded file. No authentication or user interaction is required; successful exploitation executes attacker-controlled code in the hosted service.

CVSS severity9.8
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted dangerous-file upload in Microsoft Planetary Computer Pro GeoCatalog allows remote attackers to execute code over a network. Microsoft has not disclosed the upload endpoint, accepted file types, or the server-side operation that stores or executes the uploaded file. No authentication or user interaction is required; successful exploitation executes attacker-controlled code in the hosted service.

The record

CVE
CVE-2026-40412
Published
May 22, 2026
Updated
May 22, 2026
Vendor
Microsoft
Product
Microsoft Planetary Computer Pro GeoCatalog
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 22, 2026CVE publishedPublication date reported by the CVE source.
  2. May 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=-

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Planetary Computer Pro GeoCatalogversion=-

Published CVSS scores

10.0Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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