VulnerabilityModified

CVE-2026-9181

Esri ArcGIS Server contains a directory traversal vulnerability.

HIGH 7.5EPSS 1.22%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Esri ArcGIS Server contains a directory traversal vulnerability. ArcGIS Enterprise on Kubernetes is not impacted. An unauthenticated attacker could exploit this issue by sending crafted path parameters. Successful exploitation could allow overwriting sensitive files on the system. Abuse of this issue can allow full administrative access to ArcGIS Server, with high impact to confidentiality, integrity, and availability. This issue impacts all versions of ArcGIS Server on Windows and Linux 12.0 and prior. This issue does not impact ArcGIS Enterprise for Kubernetes.

CVSS 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 1.22% probability · 67th percentile
CISA KEV: Not listed
Weakness: CWE-22
Affected: esri/arcgis server
Source: psirt@esri.com

References

https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/may-2026-arcgis-security-bulletinVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.