CVE-2025-61601

HIGH EPSS 34.4%
Published Oct 9, 20258mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Oct 9, 2025 8mo ago
Last Modified Jun 17, 2026 2w ago

Description

BigBlueButton is an open-source virtual classroom. A Denial of Service (DoS) vulnerability in versions prior to 3.0.13 allows any authenticated user to freeze or crash the entire server by abusing the polling feature's `Choices` response type. By submitting a malicious payload with a massive array in the `answerIds` field, the attacker can cause the current meeting — and potentially all meetings on the server — to become unresponsive. Version 3.0.13 contains a patch. No known workarounds are available.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
34.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-703

Affected Products 1

VendorProductVersionRange
bigbluebuttonbigbluebutton* <3.0.13

References 3

  • github.com https://github.com/bigbluebutton/bigbluebutton/pull/23662
    Issue TrackingPatch
  • github.com https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-73j3-v3fq-fqx5
    ExploitVendor Advisory
  • youtube.com https://www.youtube.com/watch?v=BwROSVIYjOY
    Exploit

Remediation

  • github.com https://github.com/bigbluebutton/bigbluebutton/pull/23662
    Issue TrackingPatch