How severe is CVE-2024-24539?

CVE-2024-24539 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2024-24539 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-24539?

CVE-2024-24539 affects Fusionpbx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-24539?

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

Does CVE-2024-24539 have an EU (EUVD) identifier?

Yes. CVE-2024-24539 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-21958.

When was CVE-2024-24539 published?

CVE-2024-24539 was published on 2024-03-18 and last updated on 2026-06-17.

CVE-2024-24539

CVE-2024-24539 is a medium-severity vulnerability in Fusionpbx with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-21958
Affected product: Fusionpbx
Published: 2024-03-18
Last modified: 2026-06-17

Description

FusionPBX before 5.2.0 does not validate a session.

Frequently asked questions

What is CVE-2024-24539?: FusionPBX before 5.2.0 does not validate a session.
How severe is CVE-2024-24539?: CVE-2024-24539 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2024-24539 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-24539?: CVE-2024-24539 affects Fusionpbx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-24539?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-24539 have an EU (EUVD) identifier?: Yes. CVE-2024-24539 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-21958.
When was CVE-2024-24539 published?: CVE-2024-24539 was published on 2024-03-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fusionpbx:fusionpbx:*:*:*:*:*:*:*:*

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