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CVE-2024-21755

26
FAUCET Score

CVE-2024-21755 is an OS command injection vulnerability affecting Fortinet FortiSandbox versions 4.4.0 through 4.4.3 and 4.2.1 through 4.2.6. This flaw allows an authenticated attacker to execute arbitrary code or commands through specially crafted requests. Rated with a CVSS score of 8.8 (High), it presents a significant risk due to its network-based attack vector and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or publicly available exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media attention, indicating awareness within the cybersecurity landscape.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0.0, <= 4.0.4CPE match
cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*
>= 4.2.1, <= 4.2.6CPE match
cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*
>= 4.4.0, <= 4.4.3CPE match
cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.5CPE matchmatch criteria
cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*
>= 4.2.0, < 4.2.7CPE matchmatch criteria
cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*

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
2.48%
Probability of exploitation in next 30 days
EPSS Percentile
82.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0248 is in the 81st 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

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 / psirt/FG-IR-23-489
Vendor Advisory