How severe is CVE-2023-36551?

CVE-2023-36551 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-36551 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-36551?

CVE-2023-36551 affects Fortinet Fortisiem. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-36551?

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

When was CVE-2023-36551 published?

CVE-2023-36551 was published on 2023-09-13 and last updated on 2026-06-17.

CVE-2023-36551

CVE-2023-36551 is a medium-severity vulnerability in Fortinet Fortisiem with a CVSS 3.x base score of 4.3. 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: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Fortinet Fortisiem
Published: 2023-09-13
Last modified: 2026-06-17

Description

A exposure of sensitive information to an unauthorized actor in Fortinet FortiSIEM version 6.7.0 through 6.7.5 allows attacker to information disclosure via a crafted http request.

Frequently asked questions

What is CVE-2023-36551?: A exposure of sensitive information to an unauthorized actor in Fortinet FortiSIEM version 6.7.0 through 6.7.5 allows attacker to information disclosure via a crafted http request.
How severe is CVE-2023-36551?: CVE-2023-36551 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-36551 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-36551?: CVE-2023-36551 affects Fortinet Fortisiem. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-36551?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-36551 published?: CVE-2023-36551 was published on 2023-09-13 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-23-126

Affected products (1)

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

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