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.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/august-2026-arcgis-security-bulletin Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.3 · esriNVD modified 2026-10-12 16:10
Affected (CPE criteria) 21
cpe:2.3:a:esri:portal_for_arcgis:*:*:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.1:-:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2024_update1:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2024_update2:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2025_update1:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2025_update2:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2025_update3:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.1:security_2026_update2:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.2:*:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.3:-:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.3:security_2025_update1:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.3:security_2025_update2:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.3:security_2025_update3:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.3:security_2026_update2:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.4:*:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.5:-:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.5:security_2026_update1:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:11.5:security_2026_update2:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:12.0:-:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:12.0:security_2026_update1:*:*:*:*:*:*cpe:2.3:a:esri:portal_for_arcgis:12.0:security_2026_update2:*:*:*:*:*:*