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VULNERABILITIES

CVE-2021-38546 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://www.nassiben.com/glowworm-attack CVEExploitThird Party Advisory
https://www.nassiben.com/glowworm-attack [email protected]ExploitThird Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-noinfoInsufficient Information to Classify Weakness[email protected]

Affected Products

ProductVersions

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-38546
NVD Published Date:
Aug 11, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-38546 Details - Not Deferred