CVE-2021-40121 Cisco Identity Services Engine Cross-Site Scripting Vulnerabilities

Medium 6.1 Published 21 Oct 2021 Updated 7 Nov 2024

Attackers can execute arbitrary scripts in the web interface of Cisco ISE, potentially compromising user sessions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-40121?

CVE-2021-40121 is a medium-severity cross-site scripting vulnerability in Cisco Identity Services Engine, published on 21 Oct 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) Software could allow an attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. For more information about these vulnerabilities, see the Details section of this advisory.

Weakness: CWE-79

Which versions are affected by CVE-2021-40121?

It affects 1 product.

Products include Cisco Identity Services Engine.

How do I fix CVE-2021-40121?

No fix has been published for CVE-2021-40121 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-40121 being exploited?

There is no known exploitation of CVE-2021-40121 in the wild and no public exploit code.

All Cisco Identity Services Engine vulnerabilities

Sources

Also known as GHSA-x2xf-qg7j-8h8x.