CVE-2025-20330 Cisco Unified Communications Manager IM and Presence Cross-Site Scripting Vulnerability
An unauthenticated attacker can execute arbitrary script code or access sensitive browser information by tricking a user into clicking a crafted link in the management interface.
- 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-2025-20330?
CVE-2025-20330 is a medium-severity cross-site scripting vulnerability in Cisco Unified Communications Manager IM and Presence Service, published on 3 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
A vulnerability in the web-based management interface of Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
Weakness: CWE-79
Which versions are affected by CVE-2025-20330?
It affects 1 product.
Products include Cisco Unified Communications Manager Im and Presence Service.
How do I fix CVE-2025-20330?
No fix has been published for CVE-2025-20330 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-2025-20330 being exploited?
There is no known exploitation of CVE-2025-20330 in the wild and no public exploit code.
Other vulnerabilities in Cisco Unified Communications Manager IM and Presence Service
- CVE-2018-0363 Cross-site request forgery in Cisco Unified Communications Manager IM & Presence Service unknown
- CVE-2023-20108 Denial of service in Cisco Unified Communications Manager IM and Presence Service
- CVE-2016-6464 Information disclosure in Cisco Unified Communications Manager
- CVE-2016-1466 Denial of service in n/a
- CVE-2021-1363 Cisco Unified Communications Manager IM & Presence Service SQL Injection Vulnerabilities
Sources
Also known as GHSA-42w7-6f8h-c8x8.