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CVE-2026-20192: Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities
- Severity: critical (CVSS 10.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-16 · updated 2026-09-28
- Weakness: CWE-284
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.
Affected products
- Cisco Identity Services Engine: from 3.1.0 before 3.3.0; 3.3.0-patch1, 3.3.0-patch10, 3.3.0-patch11, 3.3.0-patch2, 3.3.0-patch3, 3.3.0-patch4 (+16) — fixed in 3.3.0
- Cisco Identity Services Engine Passive Identity Connector: from 3.1.0 before 3.3.0; 3.3.0-patch1, 3.3.0-patch10, 3.3.0-patch11, 3.3.0-patch2, 3.3.0-patch3, 3.3.0-patch4 (+12) — fixed in 3.3.0
How to fix
Upgrade to a fixed version: Cisco Identity Services Engine 3.3.0; Cisco Identity Services Engine Passive Identity Connector 3.3.0. Check the vendor advisory for mitigations.
In the news
References
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