CVE-2026-9182Network attack vector

Unauthenticated arbitrary file upload

Published Jul 6, 2026 · Updated Jul 6, 2026

Unrestricted file upload in Esri ArcGIS Server 12.0 and earlier allows remote attackers to write crafted files through an affected endpoint. Public Esri material does not identify the endpoint, handler, destination path, or exact validation operation that accepts the crafted file. No authentication or user interaction is required; arbitrary file placement is established, while subsequent execution or data access remains undisclosed.

CVSS severity9.8
Critical
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Esri ArcGIS Server 12.0 and earlier allows remote attackers to write crafted files through an affected endpoint. Public Esri material does not identify the endpoint, handler, destination path, or exact validation operation that accepts the crafted file. No authentication or user interaction is required; arbitrary file placement is established, while subsequent execution or data access remains undisclosed.

The record

CVE
CVE-2026-9182
Published
Jul 6, 2026
Updated
Jul 6, 2026
Vendor
Esri
Product
ArcGIS Server
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 6, 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=0 <=12.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Esri · ArcGIS Serverversion=0 <=12.0

Published CVSS scores

9.8Environmental Systems Research Institute, Inc.CVSS: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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