CVE-2021-21895

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-12-22 · updated 2026-06-17
Weakness: CWE-22

Description

A directory traversal vulnerability exists in the Web Manager FsTFtp functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). A specially crafted HTTP request can lead to FsTFtp file overwrite. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Affected products

LANTRONIX Premierwave 2050 Firmware: 8.9.0.0-r4

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1337
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1337

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