CVE-2021-21894

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 arbitrary file overwrite FsTFtp file disclosure. An attacker can make an authenticated HTTP request to trigger this vulnerability.

CVSS v3.1

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

CVSS v3.0

9.1 CRITICALCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0

6.5 MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P

EPSS

2.40% chance of exploitation in the next 30 days, 83th percentile

Published

2021-12-22

Updated

2024-08-03

Proof-of-concept exploits (1)

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

References

• CVE Record
• NVD entry

Related

• CVE-2021-21893
• CVE-2021-21895
• CVE-2021-21892
• CVE-2021-21896
• CVE-2021-21891
• CVE-2021-21897