CVE-2025-55143 Cross-site scripting in Connect Secure

Medium 6.1 Published 9 Sep 2025 Updated 9 Sep 2025

Remote unauthenticated attackers can inject arbitrary text into HTTP responses, requiring user interaction to exploit.

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-2025-55143?

CVE-2025-55143 is a medium-severity cross-site scripting vulnerability in Ivanti Connect Secure, published on 9 Sep 2025. 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

Reflected text injection in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to inject arbitrary text into a crafted HTTP response. User interaction is required.

Weakness: CWE-79

Which versions are affected by CVE-2025-55143?

It affects 4 products.

Products include Ivanti Connect Secure, Ivanti Neurons for Secure Access, Ivanti Policy Secure, Ivanti Zero Trust Access Gateway.

How do I fix CVE-2025-55143?

No fix has been published for CVE-2025-55143 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-2025-55143 being exploited?

There is no known exploitation of CVE-2025-55143 in the wild and no public exploit code.

All Ivanti Connect Secure vulnerabilities

Sources

Also known as GHSA-gpqh-mj33-x354.