CVE-2026-76434 Cisco Identity Services Engine Arbitrary File Read Vulnerability

Medium 4.9 Published 16 Sep 2026 Updated 17 Sep 2026

An authenticated attacker with admin credentials can read arbitrary files from Cisco ISE via the certificate import feature.

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-2026-76434?

CVE-2026-76434 is a medium-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 certificate import functionality of the web-based management interface of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to read arbitrary files from the affected system. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to insufficient validation of user-supplied input by the affected feature. 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 read arbitrary files from the affected device, which could contain sensitive information.

Weakness: CWE-22

Which versions are affected by CVE-2026-76434?

It affects 2 products.

Products include Cisco Identity Services Engine, Cisco Identity Services Engine Passive Identity Connector.

How do I fix CVE-2026-76434?

No fix has been published for CVE-2026-76434 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-2026-76434 being exploited?

There is no known exploitation of CVE-2026-76434 in the wild and no public exploit code.

All Cisco Identity Services Engine vulnerabilities

Sources

Also known as GHSA-2whp-8f85-4cqh.