CVE-2025-27828 Cross-site scripting in n/a
An unauthenticated attacker can execute arbitrary scripts via reflected XSS in the legacy chat component, requiring user interaction to compromise confidentiality and integrity.
- 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-2025-27828?
CVE-2025-27828 is a high-severity cross-site scripting vulnerability in n/a, published on 24 Jun 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 legacy chat component of Mitel MiContact Center Business through 10.0.0.4, 10.1.0.0 through 10.1.0.5, and 10.2.0.0 through 10.2.0.4 could allow an unauthenticated attacker to conduct a reflected cross-site scripting (XSS) attack due to insufficient input validation. A successful exploit requires user interaction and could allow an attacker to execute arbitrary scripts with a limited impact on the confidentiality and the integrity.
Weakness: CWE-79
Which versions are affected by CVE-2025-27828?
How do I fix CVE-2025-27828?
No fix has been published for CVE-2025-27828 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-2025-27828 being exploited?
There is no known exploitation of CVE-2025-27828 in the wild and no public exploit code.
Sources
Also known as GHSA-56h7-86m5-vpw2.