TP-Link UE330 USB splitter devices through 2021-08-09, in certain specific use cases in which the device supplies power to audio-output equipment, 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. We assume that the USB splitter supplies power to some speakers. The power indicator LED of the USB splitter is connected directly to the power line, as a result, the intensity of the USB splitter's power indicator LED is correlative to its power consumption. The sound played by the connected speakers affects the USB splitter's power consumption and as a result is also correlative to the light intensity of the LED. By analyzing measurements obtained from an electro-optical sensor directed at the power indicator LED of the USB splitter, we can recover the sound played by the connected speakers.
Metrics
Affected Vendors & Products
References
Link | Providers |
---|---|
https://www.nassiben.com/glowworm-attack |
![]() ![]() |
History
No history.

Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-04T01:44:23.424Z
Reserved: 2021-08-11T00:00:00
Link: CVE-2021-38543

No data.

Status : Modified
Published: 2021-08-11T16:15:07.210
Modified: 2024-11-21T06:17:23.650
Link: CVE-2021-38543

No data.