CVE-2026-20148
Cisco Identity Services Engine Path Traversal Vulnerability
Description
A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to perform path traversal attacks on the underlying operating system and read 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 on the affected system.
Weakness: CWE-22
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco ISE Passive Identity Connector | Identity / IAM / MFA | cna-assigner |
| Cisco | Cisco Identity Services Engine (ISE) Check your version | Identity / IAM / MFA | cna-assigner |
Vendor-reported products (2)
- Cisco · Cisco Identity Services Engine Software
- Cisco · Cisco ISE Passive Identity Connector
Vendor advisory
cisco-sa-ise-rce-traversal-8bYndVrZ
Cisco Identity Services Engine Remote Code Execution and Path Traversal Vulnerabilities
Cisco’s rating: Critical (advisory CVSS 9.9) · Published Apr 15, 2026 · updated Apr 28, 2026 (revision 1.1)
Bug IDs: CSCws52717 , CSCws52738
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from