CVE-2026-20136
MediumCVSS 6.0Exploitation Probability (EPSS)
Low risk39th percentile - higher than 39% of all known CVEs
Summary
A vulnerability in the CLI of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) allows an authenticated local attacker with administrative privileges to perform command injection on the underlying OS and elevate privileges to root. The issue is due to insufficient input validation.
Risk Assessment
An attacker with administrative access can gain full root control over the operating system, compromising the confidentiality, integrity, and availability of data and services.
Recommendation
Apply the patches provided by Cisco for affected ISE and ISE-PIC versions immediately, and restrict CLI access to trusted administrators only.
Other vulnerabilities in Cisco Identity Services Engine
See all- CVE-2026-20186Critical
A vulnerability in Cisco Identity Services Engine (ISE) allows an authenticated remote attacker to execute arbitrary commands on the underlying OS. The attacker needs at least Read Only Admin credentials and sends a crafted HTTP request.
- CVE-2026-20180Critical
A vulnerability in Cisco Identity Services Engine (ISE) allows an authenticated remote attacker to execute arbitrary commands on the underlying OS. The attacker needs at least Read Only Admin credentials and sends a crafted HTTP request.
- CVE-2026-20146Medium
A vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) allows an authenticated remote attacker to perform path traversal attacks on the underlying operating system. The attacker can read or delete arbitrary files by sending a crafted HTTP request.
- CVE-2026-20132Medium
Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) allow an authenticated remote attacker with administrative write privileges to conduct stored XSS or reflected XSS attacks against a user of the interface. These issues stem from insufficient sanitization of user-supplied data stored in web pages.
- CVE-2025-20205Medium
The web-based management interface of Cisco ISE guest portals has XSS vulnerabilities. An authenticated attacker with administrative credentials can inject malicious code into specific pages, leading to script execution or access to sensitive data.
- CVE-2025-20204Medium
The web-based management interface of Cisco ISE guest portals has XSS vulnerabilities. An authenticated attacker with administrative credentials can inject malicious code into specific pages, leading to script execution or access to sensitive data.
Original NVD description (English source)
A vulnerability in the CLI of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, local attacker with administrative privileges to perform a command injection attack on the underlying operating system and elevate privileges to root. This vulnerability is due to insufficient validation of user supplied input. An attacker could exploit this vulnerability by providing crafted input to a specific CLI command. A successful exploit could allow the attacker to elevate their privileges to root on the underlying operating system.