What’s Vulnerable › Vulnerabilities

CVE-2020-27613

• Severity: high (CVSS 8.4 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: yes
• Published: 2020-10-21 · updated 2026-06-17
• Weakness: CWE-312

Description

The installation procedure in BigBlueButton before 2.2.28 (or earlier) uses ClueCon as the FreeSWITCH password, which allows local users to achieve unintended FreeSWITCH access.

Affected products

• bigbluebutton: before 2.2.28 — fixed in 2.2.28

How to fix

Upgrade to a fixed version: bigbluebutton 2.2.28. Check the vendor advisory for mitigations.

References

• https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html
• https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html

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