How severe is CVE-2024-33507?

CVE-2024-33507 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2024-33507 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-33507?

CVE-2024-33507 affects Fortinet Fortiisolator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-33507?

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-2024-33507 have an EU (EUVD) identifier?

Yes. CVE-2024-33507 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31245.

When was CVE-2024-33507 published?

CVE-2024-33507 was published on 2025-10-14 and last updated on 2026-06-17.

CVE-2024-33507

CVE-2024-33507 is a high-severity vulnerability in Fortinet Fortiisolator with a CVSS 3.x base score of 7.4. 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: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-31245
Weakness: CWE-613
Affected product: Fortinet Fortiisolator
Published: 2025-10-14
Last modified: 2026-06-17

Description

An insufficient session expiration vulnerability [CWE-613] and an incorrect authorization vulnerability [CWE-863] in FortiIsolator 2.4.0 through 2.4.4, 2.3 all versions, 2.2.0, 2.1 all versions, 2.0 all versions authentication mechanism may allow remote unauthenticated attacker to deauthenticate logged in admins via crafted cookie and remote authenticated read-only attacker to gain write privilege via crafted cookie.

Frequently asked questions

What is CVE-2024-33507?: An insufficient session expiration vulnerability [CWE-613] and an incorrect authorization vulnerability [CWE-863] in FortiIsolator 2.4.0 through 2.4.4, 2.3 all versions, 2.2.0, 2.1 all versions, 2.0 all versions authentication mechanism may allow remote unauthenticated attacker to deauthenticate logged in admins via crafted cookie and remote authenticated read-only attacker to gain write privilege via crafted cookie.
How severe is CVE-2024-33507?: CVE-2024-33507 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2024-33507 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-33507?: CVE-2024-33507 affects Fortinet Fortiisolator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-33507?: 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-2024-33507 have an EU (EUVD) identifier?: Yes. CVE-2024-33507 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31245.
When was CVE-2024-33507 published?: CVE-2024-33507 was published on 2025-10-14 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-24-062

Affected products (1)

cpe:2.3:a:fortinet:fortiisolator:*:*:*:*:*:*:*:*

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