CVE-2026-20192 Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities

Critical 10.0 Published 16 Sep 2026 Updated 18 Sep 2026

Cisco ISE and ISE-PIC contain improper access control vulnerabilities allowing unauthorized actions, requiring a security hardening patch.

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-2026-20192?

CVE-2026-20192 is a critical missing authorization vulnerability in Cisco Identity Services Engine, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) engineering teams have conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20192 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

Weakness: CWE-284

Which versions are affected by CVE-2026-20192?

It affects 2 products.

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

How do I fix CVE-2026-20192?

No fix has been published for CVE-2026-20192 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-2026-20192 being exploited?

There is no known exploitation of CVE-2026-20192 in the wild and no public exploit code.

All Cisco Identity Services Engine vulnerabilities

Sources

Also known as GHSA-m52c-gwq5-xchj.