CVE-2026-20194

critical

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-2026-20194 are related to incorrect resource transfer between spheres that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-669.

References

https://thehackernews.com/2026/09/cisco-warns-of-new-zero-day-ise-auth.html

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-ise-XU5EwX5T

Details

Source: Mitre, NVD

Published: 2026-09-16

Updated: 2026-09-18

Risk Information

CVSS v2

Base Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00446