Path Traversal in Cisco Identity Services Engine Software
CVE-2026-76431
A vulnerability in the file management function of the web-based management interface of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to delete arbitrary files and directories on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of directory traversal character sequences in a user-supplied file path before the request is validated. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface of an affected device. A successful exploit could allow the attacker to delete arbitrary files and directories on the underlying operating system of the affected device.
Vulnerability class: Path Traversal (Directory Traversal)
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Cisco Identity Services Engine Software — versions 3.1.0, 3.1.0 p1, 3.1.0 p10
- Cisco Ise Passive Identity Connector — versions 3.1.0, 3.2.0, 3.3.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-76431?
- CVE-2026-76431 is a medium-severity vulnerability in Cisco Identity Services Engine Software, classified under Path Traversal. CVSS score: 4.9/10. Published 2026-09-16.
- How severe is CVE-2026-76431?
- Medium severity. CVSS v3 base score is 4.9 out of 10.