How severe is CVE-2023-41843?

CVE-2023-41843 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-41843 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-41843?

CVE-2023-41843 primarily affects Fortinet Fortisandbox. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-41843?

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.

When was CVE-2023-41843 published?

CVE-2023-41843 was published on 2023-10-13 and last updated on 2026-06-17.

CVE-2023-41843

CVE-2023-41843 is a high-severity vulnerability in Fortinet Fortisandbox with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fortinet Fortisandbox
Published: 2023-10-13
Last modified: 2026-06-17

Description

A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.1, FortiSandbox 4.2.1 through 4.2.5, FortiSandbox 4.0.0 through 4.0.3, FortiSandbox 3.2 all versions, FortiSandbox 3.1 all versions, FortiSandbox 3.0 all versions, FortiSandbox 2.5 all versions, FortiSandbox 2.4.1 allows attacker to execute unauthorized code or commands via crafted HTTP requests.

Frequently asked questions

What is CVE-2023-41843?: A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 4.4.0 through 4.4.1, FortiSandbox 4.2.1 through 4.2.5, FortiSandbox 4.0.0 through 4.0.3, FortiSandbox 3.2 all versions, FortiSandbox 3.1 all versions, FortiSandbox 3.0 all versions, FortiSandbox 2.5 all versions, FortiSandbox 2.4.1 allows attacker to execute unauthorized code or commands via crafted HTTP requests.
How severe is CVE-2023-41843?: CVE-2023-41843 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-41843 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-41843?: CVE-2023-41843 primarily affects Fortinet Fortisandbox. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-41843?: 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.
When was CVE-2023-41843 published?: CVE-2023-41843 was published on 2023-10-13 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-23-273

Affected products (2)

cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortisandbox:2.4.1:*:*:*:*:*:*:*

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