CVE-2021-21895 — HIGH (7.2)

Vulnerability 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.

CVSS Score

7.2

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Lantronix	Premierwave 2050 Firmware	8.9.0.0
Lantronix	Premierwave 2050	-

Related Weaknesses (CWE)

CWE-22

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1337ExploitTechnical DescriptionThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1337ExploitTechnical DescriptionThird Party Advisory

FAQ

What is CVE-2021-21895?

CVE-2021-21895 is a vulnerability with a CVSS score of 7.2 (HIGH). 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...

How severe is CVE-2021-21895?

CVE-2021-21895 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-21895?

Check the references section above for vendor advisories and patch information. Affected products include: Lantronix Premierwave 2050 Firmware, Lantronix Premierwave 2050.