CVE-2025-61601

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

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

20 Oct 2025, 15:33

Type Values Removed Values Added
First Time Bigbluebutton
Bigbluebutton bigbluebutton
References () https://github.com/bigbluebutton/bigbluebutton/pull/23662 - () https://github.com/bigbluebutton/bigbluebutton/pull/23662 - Issue Tracking, Patch
References () https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-73j3-v3fq-fqx5 - () https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-73j3-v3fq-fqx5 - Exploit, Vendor Advisory
References () https://www.youtube.com/watch?v=BwROSVIYjOY - () https://www.youtube.com/watch?v=BwROSVIYjOY - Exploit
CPE cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*

15 Oct 2025, 20:15

Type Values Removed Values Added
References () https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-73j3-v3fq-fqx5 - () https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-73j3-v3fq-fqx5 -
References () https://www.youtube.com/watch?v=BwROSVIYjOY - () https://www.youtube.com/watch?v=BwROSVIYjOY -

09 Oct 2025, 21:15

Type Values Removed Values Added
New CVE
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