PT-2026-42221 · Esri · Arcgis Server

Published 2026-05-20 · Updated 2026-05-20 · CVE-2026-2812

Mitre

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2026-2812

Affected Products

Arcgis Server

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-2812 · Security Note
• https://esri.com/arcgis-blog/products/trust-arcgis/administration/april2026_security_bulletin · Note