How severe is CVE-2023-36555?

CVE-2023-36555 has a CVSS 3.x base score of 3.9, rated low severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-36555 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-36555?

CVE-2023-36555 affects Fortinet Fortios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-36555?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-36555 published?

CVE-2023-36555 was published on 2023-10-10 and last updated on 2026-06-17.

CVE-2023-36555

CVE-2023-36555 is a low-severity vulnerability in Fortinet Fortios with a CVSS 3.x base score of 3.9. 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: Low (CVSS 3.x base score 3.9)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fortinet Fortios
Published: 2023-10-10
Last modified: 2026-06-17

Description

An improper neutralization of script-related html tags in a web page (basic xss) in Fortinet FortiOS 7.2.0 - 7.2.4 allows an attacker to execute unauthorized code or commands via the SAML and Security Fabric components.

Frequently asked questions

What is CVE-2023-36555?: An improper neutralization of script-related html tags in a web page (basic xss) in Fortinet FortiOS 7.2.0 - 7.2.4 allows an attacker to execute unauthorized code or commands via the SAML and Security Fabric components.
How severe is CVE-2023-36555?: CVE-2023-36555 has a CVSS 3.x base score of 3.9, rated low severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-36555 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-36555?: CVE-2023-36555 affects Fortinet Fortios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-36555?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-36555 published?: CVE-2023-36555 was published on 2023-10-10 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-23-104

Affected products (1)

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*

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