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CVE-2021-41018

29
FAUCET Score

CVE-2021-41018 is an OS command injection vulnerability affecting Fortinet FortiWeb versions 6.4.1 and below, and 6.3.15 and below, allowing authenticated attackers to execute arbitrary code via crafted HTTP requests. With a CVSS score of 8.8 (High), this vulnerability poses a significant risk due to its low attack complexity and potential for complete compromise of confidentiality, integrity, and availability. There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.2.0, < 6.2.7CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
>= 6.3.0, < 6.3.16CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
>= 6.4.0, < 6.4.2CPE matchmatch criteria
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.32%
Probability of exploitation in next 30 days
EPSS Percentile
87.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0332 is in the 86th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

fortinetvendor investigatingvia nvd_reference
View patch

References

fortiguard.com / advisory/FG-IR-21-166
Vendor Advisory