CVE-2021-38547 | BDVDB-2026-158613 Detail

Description#

Logitech Z120 and S120 speakers 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.

Impact#

Weaknesses#

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Exploit#

History#

1. Version 12021-08-11Record published in the CVE List.
2. Version 22024-08-04Most recent update recorded in the CVE List.