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Home / Vulnerability Intelligence / CVE-2026-20147

CVE-2026-20147 - Vulnerability Analysis

CriticalCVSS: 9.9

Last Updated: April 15, 2026

Cisco ISE - Command Injection

Published: April 15, 2026Updated: April 15, 2026Remote Exploitable

Overview

Cisco ISE and Cisco ISE-PIC contain a command injection caused by insufficient validation of user-supplied input in HTTP requests, letting authenticated remote attackers with admin credentials execute arbitrary OS commands and cause DoS.

Severity & Score

Severity: Critical
CVSS Score: 9.9

Impact

Authenticated attackers can execute arbitrary OS commands, escalate to root, and cause denial of service on single-node deployments.

Mitigation

Update to the latest Cisco ISE version with the fix applied.

Details

CVE ID
CVE-2026-20147
Severity
Critical
CVSS Score
9.9
Type
command_injection
Status
new

CWE

  • CWE-77

CVSS Metrics

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