CVE-2021-38543 describes a "Glowworm" attack affecting TP-Link UE330 USB splitter devices. This vulnerability allows remote attackers to recover speech signals from audio-output equipment powered by the splitter by analyzing the light intensity of the device's power indicator LED. The attack requires specific conditions, including the device supplying power to speakers and the use of a telescope and electro-optical sensor. The vulnerability has a CVSS score of 5.9 (Medium), indicating a network-based attack with high complexity and high confidentiality impact, but no integrity or availability impact. The attack relies on the correlation between the LED's light intensity and the device's power consumption, which is influenced by the sound played through connected speakers. Currently, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal, suggesting low public awareness and attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2021-08-09CPE matchmatch criteria | cpe:2.3:o:tp-link:ue330_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.