CVE-2021-21889

9.9 criticalEPSS 2.9%

Critical (9.9) in lantronix premierwave 2050 firmware. EPSS 2.9% chance of exploitation in the next 30 days.

A stack-based buffer overflow vulnerability exists in the Web Manager Ping functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). A specially crafted HTTP request can lead to remote code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Severity

CVSS 3.1

9.9 critical

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS: 2.9% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-31)
CWEs: CWE-787, CWE-121
Published: 2021-12-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

lantronix:premierwave_2050_firmware

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1333
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1333

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