How severe is CVE-2024-27781?

CVE-2024-27781 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-27781 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 24% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-27781?

CVE-2024-27781 affects Fortinet Fortisandbox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-27781?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-27781 have an EU (EUVD) identifier?

Yes. CVE-2024-27781 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-24974.

When was CVE-2024-27781 published?

CVE-2024-27781 was published on 2025-02-11 and last updated on 2026-06-17.

CVE-2024-27781

CVE-2024-27781 is a high-severity vulnerability in Fortinet Fortisandbox with a CVSS 3.x base score of 7.1. Its EPSS exploit-prediction score of 24% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 24% (98th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-24974
Weakness: CWE-79
Affected product: Fortinet Fortisandbox
Published: 2025-02-11
Last modified: 2026-06-17

Description

An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.4, FortiSandbox 4.2.1 through 4.2.6, FortiSandbox 4.0.0 through 4.0.4, FortiSandbox 3.2 all versions, FortiSandbox 3.1 all versions, FortiSandbox 3.0 all versions allows an authenticated attacker to execute unauthorized code or commands via crafted HTTP requests.

Frequently asked questions

What is CVE-2024-27781?: An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.4, FortiSandbox 4.2.1 through 4.2.6, FortiSandbox 4.0.0 through 4.0.4, FortiSandbox 3.2 all versions, FortiSandbox 3.1 all versions, FortiSandbox 3.0 all versions allows an authenticated attacker to execute unauthorized code or commands via crafted HTTP requests.
How severe is CVE-2024-27781?: CVE-2024-27781 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-27781 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 24% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-27781?: CVE-2024-27781 affects Fortinet Fortisandbox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-27781?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-27781 have an EU (EUVD) identifier?: Yes. CVE-2024-27781 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-24974.
When was CVE-2024-27781 published?: CVE-2024-27781 was published on 2025-02-11 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-24-063

Affected products (1)

cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*

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