CVE-2026-27467
BigBlueButton: Audio from participants to the server initially unmuted
Vexday Risk Score
8Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 2EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
21 feb 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
BigBlueButton is an open-source virtual classroom. In versions 3.0.19 and below, when first joining a session with the microphone muted, the client sends audio to the server regardless of mute state. Media is discarded at the server side, so it isn't audible to any participants, but this may allow for malicious server operators to access audio data. The behavior is only incorrect between joining the meeting and the first time the user unmutes. This issue has been fixed in version 3.0.20.
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N
Productos afectados
bigbluebutton · bigbluebutton¿Quieres saber si tu infraestructura está expuesta a esto?
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