There is a missing authentication vulnerability in Esri Portal for ArcGIS versions 12.0 and prior that may allow a remote, unauthenticated attacker to access a specific resource (not user content) that should only be accessible by authenticated users. Users working with ArcGIS Enterprise 11.1, 11.3, 11.5, or 12.0 are encouraged to patch. All users are advised to upgrade to the latest long-term support release.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.3, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, for affected systems. Impacting 1 product from esri organizations running these solutions should prioritize assessment and patching.
Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2026-08-21T21:17:03.423
2026-09-11T17:51:42.023
Analyzed
CVSSv3.1: 5.3 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | esri | portal_for_arcgis | < 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.2 | Yes |
| Application | esri | portal_for_arcgis | 11.3 | Yes |
| Application | esri | portal_for_arcgis | 11.3 | Yes |
| Application | esri | portal_for_arcgis | 11.3 | Yes |
| Application | esri | portal_for_arcgis | 11.3 | Yes |
| Application | esri | portal_for_arcgis | 11.3 | Yes |
| Application | esri | portal_for_arcgis | 11.4 | Yes |
| Application | esri | portal_for_arcgis | 11.5 | Yes |
| Application | esri | portal_for_arcgis | 11.5 | Yes |
| Application | esri | portal_for_arcgis | 11.5 | Yes |
| Application | esri | portal_for_arcgis | 12.0 | Yes |
| Application | esri | portal_for_arcgis | 12.0 | Yes |
| Application | esri | portal_for_arcgis | 12.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For esri's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.