Vulnerability · Published Sep 16, 2026 · Assigned by cisco
CVE-2026-20234Cisco Identity Services Engine Hardening Release - Insuffiencently Protected Credential Vulnerabilities
Critical 9.9
In plain English
A critical-severity security flaw in Cisco Identity Services Engine Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
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-2026-20234 are related to insufficiently protected credentials issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-522.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Identity Services Engine Software | 3.1.03.1.0 p13.1.0 p33.1.0 p23.2.03.1.0 p43.1.0 p53.2.0 p1 |
| Cisco | Cisco ISE Passive Identity Connector | 3.2.03.1.03.3.03.4.03.5.0 |
Weakness: CWE-522 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H