OCTOBER 7, 2026
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Case File

CVE-2026-20237

CRITICAL · CVSS 9.1 EPSS 0.33%

Source: NVD + CISA KEV + EPSS · Published 2026-09-16 · Last synced 2026-10-07

CyberRota Analysis

AI-Generated

Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) are vulnerable due to improper input validation, which could allow an attacker to exploit these weaknesses. The critical severity of this vulnerability (CVSS 9.1) indicates a high potential for impact, including unauthorized access or manipulation of sensitive data. Organizations using these Cisco products should prioritize immediate updates to mitigate the risks associated with this vulnerability.

CVE
CVE-2026-20237
Severity
CRITICAL
CVSS
9.1
EPSS
0.33%
Cisco

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