Identity Services Engine
CVE-2026-20190: Cisco Identity Services Engine Information Disclosure Vulnerability
A vulnerability in Cisco ISE and ISE-PIC could allow an unauthenticated, remote attacker to view sensitive information on an affected device.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Cisco Identity Services Engine Software 3.4 | See the advisory |
| Cisco Identity Services Engine Software 3.4 Patch 1 | See the advisory |
| Cisco Identity Services Engine Software 3.4 Patch 2 | See the advisory |
| Cisco Identity Services Engine Software 3.4 Patch 3 | See the advisory |
| Cisco Identity Services Engine Software 3.5 | See the advisory |
| Cisco Identity Services Engine Software 3.4 Patch 4 | See the advisory |
| Cisco Identity Services Engine Software 3.5 Patch 1 | See the advisory |
| Cisco Identity Services Engine Software 3.4 Patch 5 | See the advisory |
| Cisco Identity Services Engine Software 3.5 Patch 2 | See the advisory |
| Cisco ISE Passive Identity Connector 3.4 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A vulnerability in Cisco ISE and ISE-PIC could allow an unauthenticated, remote attacker to view sensitive information on an affected device.
This vulnerability is due to improper authorization checks when a resource is accessed. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to gain access to sensitive information, including hashed credentials that could be used in future attacks.
Exploitation
The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.