Vulnerability Details : 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 overwrite. An attacker can make an authenticated HTTP request to trigger this vulnerability.
Vulnerability category: Directory traversal
Products affected by CVE-2021-21895
- cpe:2.3:o:lantronix:premierwave_2050_firmware:8.9.0.0:r4:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-21895
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 41 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-21895
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST | |
|
9.1
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
2.3
|
6.0
|
Talos | |
|
7.2
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
1.2
|
5.9
|
NIST |
CWE ids for CVE-2021-21895
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by:
- nvd@nist.gov (Primary)
- talos-cna@cisco.com (Secondary)
References for CVE-2021-21895
-
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1337
TALOS-2021-1337 || Cisco Talos Intelligence Group - Comprehensive Threat IntelligenceExploit;Technical Description;Third Party Advisory
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