CVE-2026-20190 Cisco Identity Services Engine Information Disclosure Vulnerability

High 7.5 Published 17 Jun 2026 Updated 17 Jun 2026

Unauthenticated remote attackers can view sensitive information, including hashed credentials, due to improper authorization checks in Cisco ISE.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-20190?

CVE-2026-20190 is a high-severity missing authorization vulnerability in Cisco Identity Services Engine, published on 17 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-285

Which versions are affected by CVE-2026-20190?

It affects 2 products.

Products include Cisco Identity Services Engine, Cisco Identity Services Engine Passive Identity Connector.

How do I fix CVE-2026-20190?

No fix has been published for CVE-2026-20190 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-20190 being exploited?

There is no known exploitation of CVE-2026-20190 in the wild and no public exploit code.

All Cisco Identity Services Engine vulnerabilities

Sources

Also known as GHSA-6x4j-83f8-hhx2.