Is CVE-2025-61602 actively exploited?

CVE-2025-61602 has no public evidence of in-the-wild exploitation as of 2025-10-20.

What is the CVSS score for CVE-2025-61602?

CVE-2025-61602 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2025-61602?

Patch guidance is available from bigbluebutton security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-61602.

Which products are affected by CVE-2025-61602?

1 product: bigbluebutton bigbluebutton.

Fix CVE-2025-61602 - HIGH bigbluebutton bigbluebutton

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 crash the chat functionality for all participants in a meeting by sending a malformed `reactionEmojiId` in the GraphQL mutation `chatSendMessageReaction`. Version 3.0.13 contains a patch. No known workarounds are available.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-703

Metadata

Primary Vendor: BIGBLUEBUTTON
Published: 10/9/2025
Last Modified: 10/20/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2025-61602

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary