CVE-2021-38546
Estado: ModificadaMedia (5.9)—
CREATIVE Pebble devices through 2021-08-09 allow remote attackers to recover speech signals from an LED on the device, via a telescope and an electro-optical sensor, aka a "Glowworm" attack. The power indicator LED of the speakers is connected directly to the power line, as a result, the intensity of a device's power indicator LED is correlative to the power consumption. The sound played by the speakers affects their power consumption and as a result is also correlative to the light intensity of the LEDs. By analyzing measurements obtained from an electro-optical sensor directed at the power indicator LEDs of the speakers, we can recover the sound played by them.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Puntuación base: 5.9
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.29%
- Percentil entre todas las CVEs puntuadas: 69
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (4)
CWE
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
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"value": "Los dispositivos CREATIVE Pebble hasta 09-08-2021, permiten a atacantes remotos recuperar las señales de voz de un LED del dispositivo, por medio de un telescopio y un sensor electro-óptico, también se conoce como un ataque \"Glowworm\". El LED indicador de potencia de los altavoces está conectado directamente a la línea de alimentación, por lo que la intensidad del LED indicador de potencia de un dispositivo es correlativa al consumo de energía. El sonido reproducido por los altavoces afecta a su consumo de energía y, en consecuencia, también es correlativo a la intensidad luminosa de los LED. Al analizar las medidas obtenidas por un sensor electro-óptico dirigido a los LEDs indicadores de potencia de los altavoces, podemos recuperar el sonido reproducido por los mismos"
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