CVE-2026-76424
Cisco ISE Arbitrary File Access Vulnerability
Description
A vulnerability in the REST API of Cisco ISE could allow an authenticated, remote attacker to upload or copy arbitrary files on an affected device. This vulnerability is due to insufficient validation in file operations. An attacker could exploit this vulnerability by uploading a file with a crafted path. A successful exploit could allow the attacker to upload files to arbitrary locations and execute arbitrary commands as root on the affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.
Weakness: CWE-23
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Identity Services Engine (ISE) Check your version | Identity / IAM / MFA | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco Identity Services Engine Software
Vendor advisory
Cisco Identity Services Engine Vulnerabilities
Cisco’s rating: Critical (advisory CVSS 10.0) · Published Sep 16, 2026
Bug IDs: CSCwu20156 , CSCwu26054 , CSCwu26055 , CSCwu27428 , CSCwu39998 , CSCwu43502
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from