What is CVE-2025-67823?

CVE-2025-67823 is a high-severity vulnerability in Mitel Cx, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2026-01-15.

How severe is CVE-2025-67823?

High severity. CVSS v3 base score is 8.2 out of 10.

XSS in Mitel Cx

CVE-2025-67823

A vulnerability in the Multimedia Email component of Mitel MiContact Center Business through 10.2.0.10 and Mitel CX through 1.1.0.1 could allow an unauthenticated attacker to conduct a Cross-Site Scripting (XSS) attack due to insufficient…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (20.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.

Affected products

Mitel Cx
Mitel Micontact_center_business
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Vendor Advisory)
cve@mitre.org (Vendor Advisory)

Frequently asked questions

What is CVE-2025-67823?: CVE-2025-67823 is a high-severity vulnerability in Mitel Cx, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2026-01-15.
How severe is CVE-2025-67823?: High severity. CVSS v3 base score is 8.2 out of 10.