How severe is CVE-2024-33509?

CVE-2024-33509 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-33509 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-33509?

CVE-2024-33509 affects Fortinet Fortiweb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-33509?

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

Does CVE-2024-33509 have an EU (EUVD) identifier?

Yes. CVE-2024-33509 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31247.

When was CVE-2024-33509 published?

CVE-2024-33509 was published on 2024-07-09 and last updated on 2026-06-17.

CVE-2024-33509

CVE-2024-33509 is a medium-severity vulnerability in Fortinet Fortiweb with a CVSS 3.x base score of 4.8. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-31247
Weakness: CWE-295
Affected product: Fortinet Fortiweb
Published: 2024-07-09
Last modified: 2026-06-17

Description

An improper certificate validation vulnerability [CWE-295] in FortiWeb 7.2.0 through 7.2.1, 7.0 all versions, 6.4 all versions and 6.3 all versions may allow a remote and unauthenticated attacker in a Man-in-the-Middle position to decipher and/or tamper with the communication channel between the device and different endpoints used to fetch data for Web Application Firewall (WAF).

Frequently asked questions

What is CVE-2024-33509?: An improper certificate validation vulnerability [CWE-295] in FortiWeb 7.2.0 through 7.2.1, 7.0 all versions, 6.4 all versions and 6.3 all versions may allow a remote and unauthenticated attacker in a Man-in-the-Middle position to decipher and/or tamper with the communication channel between the device and different endpoints used to fetch data for Web Application Firewall (WAF).
How severe is CVE-2024-33509?: CVE-2024-33509 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-33509 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-33509?: CVE-2024-33509 affects Fortinet Fortiweb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-33509?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-33509 have an EU (EUVD) identifier?: Yes. CVE-2024-33509 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31247.
When was CVE-2024-33509 published?: CVE-2024-33509 was published on 2024-07-09 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-22-326

Affected products (1)

cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*

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