How severe is CVE-2023-28001?

CVE-2023-28001 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-28001 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28001?

CVE-2023-28001 affects Fortinet Fortios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28001?

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

When was CVE-2023-28001 published?

CVE-2023-28001 was published on 2023-07-11 and last updated on 2026-06-17.

CVE-2023-28001

CVE-2023-28001 is a medium-severity vulnerability in Fortinet Fortios with a CVSS 3.x base score of 4.1. 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-613.

Key facts

Severity: Medium (CVSS 3.x base score 4.1)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-613
Affected product: Fortinet Fortios
Published: 2023-07-11
Last modified: 2026-06-17

Description

An insufficient session expiration in Fortinet FortiOS 7.0.0 - 7.0.12 and 7.2.0 - 7.2.4 allows an attacker to execute unauthorized code or commands via reusing the session of a deleted user in the REST API.

Frequently asked questions

What is CVE-2023-28001?: An insufficient session expiration in Fortinet FortiOS 7.0.0 - 7.0.12 and 7.2.0 - 7.2.4 allows an attacker to execute unauthorized code or commands via reusing the session of a deleted user in the REST API.
How severe is CVE-2023-28001?: CVE-2023-28001 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-28001 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28001?: CVE-2023-28001 affects Fortinet Fortios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28001?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-28001 published?: CVE-2023-28001 was published on 2023-07-11 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-23-028

Affected products (1)

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

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