CVE-2025-61601

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/bigbluebutton/bigbluebutton/pull/23662	Issue Tracking Patch
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-73j3-v3fq-fqx5	Exploit Vendor Advisory
https://www.youtube.com/watch?v=BwROSVIYjOY	Exploit
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-73j3-v3fq-fqx5	Exploit Vendor Advisory
https://www.youtube.com/watch?v=BwROSVIYjOY	Exploit

Configurations

Configuration 1 (hide)

cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-10-09 21:15

Updated : 2025-10-20 15:33

NVD link : CVE-2025-61601

Mitre link : CVE-2025-61601

CVE.ORG link : CVE-2025-61601

JSON object : View

Products Affected

bigbluebutton

bigbluebutton

CWE

CWE-703

Improper Check or Handling of Exceptional Conditions

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