CVE-2025-57876Network attack vector

Privileged token theft via stored file script

Published Sep 29, 2025 · Updated Sep 29, 2025

Stored XSS in Esri Portal for ArcGIS 10.9.1 through 11.4 allows remote authenticated users to run script in a victim's browser. The file-handling path stores attacker-supplied active script content and later serves it to another user's browser without neutralization. Exploitation requires high Portal privileges and a victim to load the file; exposed privileged tokens can grant full Portal control.

CVSS severity4.8
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Esri Portal for ArcGIS 10.9.1 through 11.4 allows remote authenticated users to run script in a victim's browser. The file-handling path stores attacker-supplied active script content and later serves it to another user's browser without neutralization. Exploitation requires high Portal privileges and a victim to load the file; exposed privileged tokens can grant full Portal control.

The record

CVE
CVE-2025-57876
Published
Sep 29, 2025
Updated
Sep 29, 2025
Vendor
Esri
Product
Portal for ArcGIS
Classifications
CWE-79, CAPEC-63, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.9.1 <=11.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Esri · Portal for ArcGISversion=10.9.1 <=11.4

Published CVSS scores

4.8Environmental Systems Research Institute, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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