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CVE-2025-27828

7.1 · HIGH

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…

Published Jun 24, 2025CWE-79EPSS 0.41%

Overview

CVE-2025-27828 is a high-severity vulnerability. It was published on June 24, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.mitel.com/support/security-advisoriesRefwww.mitel.com/support/security-advisories/mitel-product-security-advisory-misa-2025-0003

How CyberStrike helps

Frequently asked questions

What is CVE-2025-27828?

CVE-2025-27828 is a high-severity vulnerability. It was published on June 24, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-27828?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-27828?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-27828?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-27828 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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