CVE-2021-38549 describes a "Glowworm" attack affecting MIRACASE MHUB500 USB splitters. This vulnerability allows remote attackers to recover speech signals from audio equipment powered by the splitter by observing fluctuations in its power indicator LED. The attack requires line-of-sight to the LED and specialized electro-optical sensors, resulting in a CVSS score of 5.9 (Medium) due to its high impact on confidentiality but high attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2021-08-09CPE matchmatch criteria | cpe:2.3:o:benda:miracase_hmub500_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.