CVE-2021-21879

8.8 highEPSS 3.8%

High (8.8) in lantronix premierwave 2050. EPSS 3.8% chance of exploitation in the next 30 days.

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

Severity

CVSS 3.1

8.8 high

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

EPSS: 3.8% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-31)
CWE: CWE-22
Published: 2021-12-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

lantronix:premierwave_2050

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1323
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1323

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