What is the CVSS score of CVE-2025-67823?

CVE-2025-67823 has a CVSS 3.1 base score of 8.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Cx are affected by CVE-2025-67823?

Organizations using the Multimedia Email component of Mitel MiContact Center Business face notable risk from CVE-2025-67823, a cross-site scripting vulnerability rated CVSS 8.2.

How to fix or mitigate CVE-2025-67823?

Within 7 days: Identify all affected systems running the Multimedia Email component of Mitel MiContact Center Bus and apply vendor patches promptly. Verify anti-CSRF tokens and content security policies are enforced.

Cx CVE-2025-67823

HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-01-15 cve@mitre.org

XSS Cx Micontact Center Business Mitel

8.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.2 HIGH

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Jan 15, 2026 - 22:16 nvd

HIGH 8.2

DescriptionCVE.org

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.

AnalysisAI

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects the Multimedia Email component of Cx. 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.

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.