ZDI-26-421: Cisco Identity Services Engine validFileNameOrPath Directory Traversal Information Disclosure Vulnerability
Published Jul 15, 2026
·Updated
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Cisco Identity Services Engine. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 5.5. The following CVEs are assigned: CVE-2026-20146.
Affected Software
1 affected component
Cisco Identity Services Engine
Event History
Jul 15, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
What is the severity of ZDI-26-421?
The severity of ZDI-26-421 is rated at CVSS 5.5.
2
How do I fix ZDI-26-421?
To fix ZDI-26-421, apply the latest security patches provided by Cisco for the Identity Services Engine.
3
What type of vulnerability is ZDI-26-421?
ZDI-26-421 is a directory traversal information disclosure vulnerability.
4
What products are affected by ZDI-26-421?
ZDI-26-421 affects installations of Cisco Identity Services Engine.
5
Is authentication required to exploit ZDI-26-421?
Yes, authentication is required to exploit the ZDI-26-421 vulnerability.