CVE-2026-20146
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk38th percentile - higher than 38% of all known CVEs
Summary
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.
Risk Assessment
The risk involves potential access to sensitive configuration files or credentials, as well as deletion of critical system files, which could lead to service disruption or data confidentiality breaches.
Recommendation
Apply the patches provided by Cisco for affected ISE and ISE-PIC versions immediately. Restrict administrative access and monitor for unusual HTTP requests.
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-2026-20136Medium
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.
- 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 Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to perform path traversal attacks on the underlying operating system to either read or delete arbitrary files. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected system. A successful exploit could allow the attacker to access sensitive files or delete arbitrary files on the affected system.