CVE-2026-20237

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-2026-20237 are related to improper input validation issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-20.

Score

CVSS 3.1 9.1 Critical

Status

Awaiting Analysis - psirt@cisco.com

Published

2026-09-16

Last modified

2026-09-18

Weaknesses

CWE-20

Affected products

• Cisco Identity Services Engine Software (Cisco)
• Cisco Ise Passive Identity Connector (Cisco)

References

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