THREATPORT/VULNERABILITY/CVE-2021-43421
CRITICAL SEVERITY

CVE-2021-43421

Elfinder vulnerability

CVSS
9.8
EPSS
42.8%
EPSS pct
99th
Exploited
No known
A File Upload vulnerability exists in Studio-42 elFinder 2.0.4 to 2.1.59 via connector.minimal.php, which allows a remote malicious user to upload arbitrary files and execute PHP code.
Affected vendor
Std42
Affected product
Elfinder
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-434 — Unrestricted Upload of File with Dangerous Type
Published
2022-04-07

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 42.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it among the most exploited CVEs currently tracked.

Check your external exposure to CVE-2021-43421

  • Confirm whether Std42 Elfinder is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-43421.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-43421

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