CVE-2026-2812

Improper Authentication issue in ArcGIS Server

Published May 20, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Microsoft
Microsoft windows
CPEs cpe:2.3:a:esri:arcgis_server:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Microsoft
Microsoft windows
Type Values Removed Values Added
First Time appeared Esri
Esri arcgis Server
Vendors & Products Esri
Esri arcgis Server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Improper Authentication issue in ArcGIS Server
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Esri
Published
Updated
May 20, 2026, 7:30 PM
Reserved
Feb 19, 2026, 4:37 PM
Status
Analyzed
Published
May 20, 2026, 8:16 PM
Modified
Jul 23, 2026, 12:10 PM