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CVE-2026-33519

Esri Portal for ArcGIS - Authorization Service

Esri CVSS 9.8 Updated April 30, 2026

Executive Risk Summary

"A vulnerability in Esri Portal for ArcGIS 11.4, 11.5, and 12.0 allows unauthorized access due to incorrect authorization checks on developer credentials. This could lead to unauthorized data access or modifications within the portal."

Anticipated Attack Path

  1. 1. Initial Exploitation: Attacker identifies vulnerable Esri Portal for ArcGIS instance
  2. 2. Privilege Escalation: Attacker exploits incorrect authorization to gain unauthorized access
  3. 3. Data Exfiltration/Modification: Attacker accesses or modifies sensitive data within the portal

Am I Vulnerable?

  • Verify Esri Portal for ArcGIS version and apply relevant patches
  • Review developer credential permissions and access logs
  • Monitor for unusual activity within the portal

Operational Audit Arsenal

Target Type Service
Target Asset ArcGIS Portal
Standard Path Windows, Linux, Kubernetes

Manual Verification Required

This is a non-Windows asset (Esri). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.

Patch Impact Forecast

Reboot Required Likely

Potential disruption to portal services during patch application

Internal Work Notes

CVE-2026-33519: Esri Portal for ArcGIS authorization vulnerability - apply patches and review developer credential permissions

Technical Intelligence & Operational Utilities • Delivered Weekly

Intelligence Sources

Related Esri Threats

Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.