How severe is CVE-2023-40723?

CVE-2023-40723 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-40723 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-2023-40723?

CVE-2023-40723 affects Fortinet Fortisiem. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40723?

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-2023-40723 have an EU (EUVD) identifier?

Yes. CVE-2023-40723 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-45277.

When was CVE-2023-40723 published?

CVE-2023-40723 was published on 2025-03-11 and last updated on 2026-06-17.

CVE-2023-40723

CVE-2023-40723 is a high-severity vulnerability in Fortinet Fortisiem with a CVSS 3.x base score of 8.1. 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-200.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-45277
Weakness: CWE-200
Affected product: Fortinet Fortisiem
Published: 2025-03-11
Last modified: 2026-06-17

Description

An exposure of sensitive information to an unauthorized actor in Fortinet FortiSIEM version 6.7.0 through 6.7.4 and 6.6.0 through 6.6.3 and 6.5.0 through 6.5.1 and 6.4.0 through 6.4.2 and 6.3.0 through 6.3.3 and 6.2.0 through 6.2.1 and 6.1.0 through 6.1.2 and 5.4.0 and 5.3.0 through 5.3.3 and 5.2.5 through 5.2.8 and 5.2.1 through 5.2.2 and 5.1.0 through 5.1.3 allows attacker to execute unauthorized code or commands via api request.

Frequently asked questions

What is CVE-2023-40723?: An exposure of sensitive information to an unauthorized actor in Fortinet FortiSIEM version 6.7.0 through 6.7.4 and 6.6.0 through 6.6.3 and 6.5.0 through 6.5.1 and 6.4.0 through 6.4.2 and 6.3.0 through 6.3.3 and 6.2.0 through 6.2.1 and 6.1.0 through 6.1.2 and 5.4.0 and 5.3.0 through 5.3.3 and 5.2.5 through 5.2.8 and 5.2.1 through 5.2.2 and 5.1.0 through 5.1.3 allows attacker to execute unauthorized code or commands via api request.
How severe is CVE-2023-40723?: CVE-2023-40723 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-40723 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-2023-40723?: CVE-2023-40723 affects Fortinet Fortisiem. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40723?: 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-2023-40723 have an EU (EUVD) identifier?: Yes. CVE-2023-40723 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-45277.
When was CVE-2023-40723 published?: CVE-2023-40723 was published on 2025-03-11 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-23-117

Affected products (1)

cpe:2.3:a:fortinet:fortisiem:*:*:*:*:*:*:*:*

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