CVE-2021-21883: Lantronix Premierwave 2050 Firmware

Critical severity, CVSS 9.9. EPSS: 6.1% chance of exploitation in the next 30 days.

An OS command injection vulnerability exists in the Web Manager Diagnostics: Ping functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted HTTP request can lead to arbitrary command execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Affected products

• Lantronix Premierwave 2050 Firmware: version 8.9.0.0 only

Published 2021-12-22. Last modified 2026-06-17.