THREATPORT/VULNERABILITY/CVE-2021-41018
HIGH SEVERITY

CVE-2021-41018

Fortiweb vulnerability

CVSS
8.8
EPSS
3.3%
EPSS pct
87th
Exploited
No known
A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiWeb version 6.4.1 and below, 6.3.15 and below allows attacker to execute unauthorized code or commands via crafted HTTP requests.
Affected vendor
Fortinet
Affected product
Fortiweb
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-78 — OS Command Injection
Published
2022-02-02

Risk analysis

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

Its EPSS score of 3.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2021-41018

  • Confirm whether Fortinet Fortiweb is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-41018.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-41018

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-41018 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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