CVE-2025-20250 Cross-site scripting in Cisco Webex Meetings

Medium 6.1 Published 21 May 2025 Updated 21 May 2025

An unauthenticated remote attacker can execute cross-site scripting attacks against users of Cisco Webex Meetings by tricking them into clicking a malicious link.

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-2025-20250?

CVE-2025-20250 is a medium-severity cross-site scripting vulnerability in Cisco Webex Meetings, published on 21 May 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

A vulnerability in Cisco Webex could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. A vulnerability is due to improper filtering of user-supplied input. An attacker could exploit this vulnerability by persuading a user to follow a malicious link. A successful exploit could allow the attacker to conduct a cross-site scripting attack against the targeted user.

Weakness: CWE-79

Which versions are affected by CVE-2025-20250?

It affects 1 product.

Products include Cisco Webex Meetings.

How do I fix CVE-2025-20250?

No fix has been published for CVE-2025-20250 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-2025-20250 being exploited?

There is no known exploitation of CVE-2025-20250 in the wild and no public exploit code.

All Cisco Webex Meetings vulnerabilities

Sources

Also known as GHSA-m526-j28f-j8qx.