CVE-2026-76426 Cisco ISE REST API SQL Injection Vulnerability

Medium 4.9 Published 16 Sep 2026 Updated 17 Sep 2026

An authenticated attacker with administrative credentials can exploit SQL injection in Cisco ISE REST API to read data from the monitoring database.

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-2026-76426?

CVE-2026-76426 is a medium-severity SQL injection 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 and Cisco ISE-PIC could allow an authenticated, remote attacker to conduct SQL injection attacks against the monitoring database. This vulnerability is due to insufficient validation of specific parameters that are then concatenated into an SQL statement. An attacker could exploit this vulnerability by sending a crafted request that contains SQL statements in one of the affected parameters. A successful exploit could allow the attacker to read information from the monitoring database. To exploit this vulnerability, the attacker must have valid administrative credentials.

Weakness: CWE-89

Which versions are affected by CVE-2026-76426?

It affects 2 products.

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

How do I fix CVE-2026-76426?

No fix has been published for CVE-2026-76426 yet. Limit exposure of the affected software until one is available.

Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.

Is CVE-2026-76426 being exploited?

There is no known exploitation of CVE-2026-76426 in the wild and no public exploit code.

All Cisco Identity Services Engine vulnerabilities

Sources

Also known as GHSA-xfw8-7hm4-33p5.