An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.
Published 2021-09-27 18:15:08
Updated 2022-07-08 18:21:11
View at NVD,   CVE.org
Vulnerability category: Directory traversalBypassGain privilege

Products affected by CVE-2021-20034

Exploit prediction scoring system (EPSS) score for CVE-2021-20034

29.85%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 97 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-20034

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.4
MEDIUM AV:N/AC:L/Au:N/C:N/I:P/A:P
10.0
4.9
NIST
9.1
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
3.9
5.2
NIST

CWE ids for CVE-2021-20034

  • 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)
  • The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
    Assigned by: PSIRT@sonicwall.com (Secondary)

References for CVE-2021-20034

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