Serial number: AV26-1036 Date: October 13, 2026 As of October 13, 2026, Esri is affected by vulnerabilities in the following product: Portal for ArcGIS Prior to 12.2 The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available. September 2026 ArcGIS Security Bulletin Esri Security Advisories
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