CVE-2026-20234

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-2026-20234 are related to insufficiently protected credentials issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-522.

  • Published Sep 16, 2026
  • CVSS 9.9 critical
  • 0.4% chance of exploitation in the next 30 days (EPSS)

Affected software

In the news

CVE-2026-20234 at the National Vulnerability Database