CVE-2020-29042 json
An issue was discovered in BigBlueButton through 2.2.29.
published 2020-11-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-21424
- cvss
- 3.7
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 65%
- public exploits
- 0
- none known
Summary
An issue was discovered in BigBlueButton through 2.2.29. A brute-force attack may occur because an unlimited number of codes can be entered for a meeting that is protected by an access code.
Exploit prediction
1.08% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- cxsecurity.com https://cxsecurity.com/issue/WLB-2020110210 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-307 Improper Restriction of Excessive Authentication Attempts
References
-
cxsecurity.com
/issue/WLB-2020110210
exploit, third-party-advisory
-
github.com
/bigbluebutton/bigbluebutton/releases
release-notes, third-party-advisory
-
packetstormsecurity.com
/files/160238/BigBlueButton-2.2.29-Brute-Force.html
third-party-advisory
Sources
- CVE List CVE-2020-29042
- NVD CVE-2020-29042
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