How severe is CVE-2024-6854?

CVE-2024-6854 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2024-6854 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-6854?

CVE-2024-6854 affects H2o. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-6854?

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-2024-6854 have an EU (EUVD) identifier?

Yes. CVE-2024-6854 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6978.

When was CVE-2024-6854 published?

CVE-2024-6854 was published on 2025-03-20 and last updated on 2026-06-17.

CVE-2024-6854

CVE-2024-6854 is a high-severity vulnerability in H2o with a CVSS 3.x base score of 7.1. 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-36.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-6978
Weakness: CWE-36
Affected product: H2o
Published: 2025-03-20
Last modified: 2026-06-17

Description

In h2oai/h2o-3 version 3.46.0, the endpoint for exporting models does not restrict the export location, allowing an attacker to export a model to any file in the server's file structure, thereby overwriting it. This vulnerability can be exploited to overwrite any file on the target server with a trained model file, although the content of the overwrite is not controllable by the attacker.

Frequently asked questions

What is CVE-2024-6854?: In h2oai/h2o-3 version 3.46.0, the endpoint for exporting models does not restrict the export location, allowing an attacker to export a model to any file in the server's file structure, thereby overwriting it. This vulnerability can be exploited to overwrite any file on the target server with a trained model file, although the content of the overwrite is not controllable by the attacker.
How severe is CVE-2024-6854?: CVE-2024-6854 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2024-6854 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-6854?: CVE-2024-6854 affects H2o. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-6854?: 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-2024-6854 have an EU (EUVD) identifier?: Yes. CVE-2024-6854 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6978.
When was CVE-2024-6854 published?: CVE-2024-6854 was published on 2025-03-20 and last updated on 2026-06-17.

References

https://huntr.com/bounties/97d013f9-ac51-4c80-8dd7-8dfde11f33b2

Affected products (1)

cpe:2.3:a:h2o:h2o:3.46.0:*:*:*:*:*:*:*

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