CVE-2026-76424 Cisco ISE Arbitrary File Access Vulnerability

High 7.2 Published 16 Sep 2026 Updated 17 Sep 2026

Authenticated administrators can exploit insufficient file validation to upload arbitrary files and execute commands as root on Cisco ISE devices.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-76424?

CVE-2026-76424 is a high-severity path traversal vulnerability in Cisco Identity Services Engine, published on 16 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official 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

Which versions are affected by CVE-2026-76424?

It affects 1 product.

Products include Cisco Identity Services Engine.

How do I fix CVE-2026-76424?

No fix has been published for CVE-2026-76424 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-76424 being exploited?

There is no known exploitation of CVE-2026-76424 in the wild and no public exploit code.

All Cisco Identity Services Engine vulnerabilities

Sources

Also known as GHSA-9mjp-cphq-5x57.