What’s Vulnerable › Vulnerabilities

CVE-2021-38365

• Severity: low (CVSS 3.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-10 · updated 2026-07-05

Description

Winner (aka ToneWinner) desktop speakers through 2021-08-09 allow remote attackers to recover speech signals from the power-indicator LED via a telescope and an electro-optical sensor, aka a "Glowworm" attack.

Affected products

• Tonewinner Winner Desktop Speakers Firmware: through 2021-08-09

References

• https://www.nassiben.com/glowworm-attack
• http://www.tonewinner.com
• https://www.nassiben.com/glowworm-attack

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