What is CVE-2020-27613?

CVE-2020-27613 is a high-severity vulnerability in Bigbluebutton, classified under Cleartext Storage of Sensitive Information. CVSS score: 8.4/10. Published 2020-10-21.

How severe is CVE-2020-27613?

High severity. CVSS v3 base score is 8.4 out of 10.

Vulnerability in Bigbluebutton

CVE-2020-27613

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.

Published 2020-10-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (17.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Bigbluebutton

Weakness classification (CWE)

CWE-312 — Cleartext Storage of Sensitive Information

References

www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-15161… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-27613?: CVE-2020-27613 is a high-severity vulnerability in Bigbluebutton, classified under Cleartext Storage of Sensitive Information. CVSS score: 8.4/10. Published 2020-10-21.
How severe is CVE-2020-27613?: High severity. CVSS v3 base score is 8.4 out of 10.