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01 Record

CVE-2021-21895

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

CriticalPUBLISHEDCNA: talos
CNA base score9.1 CVSS v3.xCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

02 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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
2.41% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 83.8% of scored records. A rank, not a probability.
NVD base score
7.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-12-22 18:06Z4 YR AGO
Last updated
2024-08-03 18:30Z2 YR AGO
Reserved
2021-01-04
Assigning CNA
talos
Record state
PUBLISHED
Severity
Critical (CVSS 9.1)
CNA CVSS vector
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Weaknesses
  • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
Data version
5.1
Document digest
4f1b2f059608f6b9c858bf55b3c99181fef5726067f2e65de4cdbfe5cbf0893e

05 Affected products

VendorProductVersionsPlatforms
n/aLantronixLantronix PremierWave 2050 8.9.0.0R4 (in QEMU)—

06 References