Critical severity · published Oct 13, 2026
CVE-2026-69227
BUG-000187331 Portal for ArcGIS has a security vulnerability
9.8
CVSS
0.3%
EPSS
No
On KEV
Description
A flaw in Portal for ArcGIS allows unauthenticated access to
certain Portal Administrator API endpoints under specific conditions. This could enable an attacker to access administrative functionality that should require authentication.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PF
Portal for ArcGIS · Esri
11.1 through 12.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-69227
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-69227
www.esri.com
https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/september-2026-arcgis-security-bulletin
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