What’s Vulnerable › Vulnerabilities

CVE-2025-67823

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-15 · updated 2026-06-17
• Weakness: CWE-79

Description

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 input validation. A successful exploit requires user interaction where the email channel is enabled. This could allow an attacker to execute arbitrary scripts in the victim's browser or desktop client application.

Affected products

• Mitel Cx: before 2.0 — fixed in 2.0
• Mitel Micontact Center Business: before 10.2.0.11 — fixed in 10.2.0.11

How to fix

Upgrade to a fixed version: Mitel Cx 2.0; Mitel Micontact Center Business 10.2.0.11. Check the vendor advisory for mitigations.

References

• https://www.mitel.com/support/security-advisories
• https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-misa-2025-0010

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