Is CVE-2020-27340 actively exploited?

No active exploitation of CVE-2020-27340 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-27340 be exploited remotely?

Yes. CVE-2020-27340 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-27340?

CVE-2020-27340 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2020-27340

MEDIUM

CVE-2020-27340

NVD-CWE-noinfoPublished: December 18, 2020· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official Description

The online help portal of Mitel MiCollab before 9.2 could allow an attacker to redirect a user to an unauthorized website by executing malicious script due to insufficient access control.

NVD Source

Technical Analysis

CVE-2020-27340 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.