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Public proof of conceptFix available

CVE-2020-27603

A public proof of concept exists; no exploitation attested.

  • Published2020-10-21
  • Fixed in2.2.27

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

BigBlueButton before 2.2.27 has an unsafe JODConverter setting in which LibreOffice document conversions can access external files.

Timeline

dates in UTC
  1. 2020-10-2115:15CVE publishedNVD

Versions per branch

NVD
Bigbluebutton
BranchAffectedFixed in
2.2< 2.2.272.2.27

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Bigbluebutton to 2.2.27

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2020-10-21
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2020-27603?

BigBlueButton before 2.2.27 has an unsafe JODConverter setting in which LibreOffice document conversions can access external files.

Is CVE-2020-27603 actively exploited?

Active exploitation of CVE-2020-27603 has not been confirmed. Its EPSS score was 2.9% on 2026-11-04, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-27603?

CVE-2020-27603 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record