There is a stored Cross-site Scripting vulnerability in Esri Portal for ArcGIS Enterprise Sites versions 10.9.1 – 11.4 that may allow a remote, authenticated attacker to inject malicious a file with an embedded xss script which when loaded could potentially execute arbitrary JavaScript code in the victim’s browser. The privileges required to execute this attack are high. The attack could disclose a privileged token which may result in the attacker gaining full control of the Portal.
Conclusion & alert: CVE-2025-55107 is rated Low Risk (21.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.02%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-01-17 | 0.06% | 0.02% | -0.04% |
| 2 | 2025-12-21 | 0.03% | 0.06% | +0.03% |
| 3 | 2025-08-22 | — | 0.03% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.8 | 3.1 | MEDIUM |
|
1.7 | 2.7 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| esri | portal_for_arcgis | >= 10.9.1, <= 11.4 | cpe:2.3:a:esri:portal_for_arcgis:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/2925891-2 | Vendor Advisory |