CVE-2026-2812: Esri Arcgis Server

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.

Affected products

• Esri Arcgis Server: from 11.1, up to and including 12.0

Published 2026-05-20. Last modified 2026-07-23.