Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-41016

27
FAUCET Score

CVE-2021-41016 describes a command injection vulnerability in Fortinet FortiExtender versions 7.0.1 and below, 4.2.3 and below, and 4.1.7 and below. An authenticated attacker can exploit this flaw by injecting special characters into CLI commands, leading to the execution of privileged shell commands. Rated with a CVSS score of 8.8 (High), this vulnerability allows for complete compromise of confidentiality, integrity, and availability, requiring only low privileges and no user interaction for network-based exploitation. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.1.1, < 4.1.8CPE matchmatch criteria
cpe:2.3:o:fortinet:fortiextender_firmware:*:*:*:*:*:*:*:*
>= 4.2.0, < 4.2.4CPE matchmatch criteria
cpe:2.3:o:fortinet:fortiextender_firmware:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.0.2CPE matchmatch criteria
cpe:2.3:o:fortinet:fortiextender_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.05%
Probability of exploitation in next 30 days
EPSS Percentile
60.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0106 is in the 57th 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-21-148
Vendor Advisory