CVE-2026-20190

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-06-17 17:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-09-25 16:41 UTC Last updatedMost recent change to the record

Details

Published

2026-06-17 17:16 UTC

Last modified

2026-09-25 16:41 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-285

Record status

Analyzed

Affected

• Cisco Identity Services Engine 3.4.0
• Cisco Identity Services Engine 3.5.0
• Cisco Identity Services Engine Passive Identity Connector 3.4.0

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None