How severe is CVE-2024-7765?

CVE-2024-7765 has a CVSS 3.x base score of 7.5, rated high 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 high.

Is CVE-2024-7765 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-7765?

CVE-2024-7765 affects H2o. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-7765?

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-2024-7765 have an EU (EUVD) identifier?

Yes. CVE-2024-7765 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6953.

When was CVE-2024-7765 published?

CVE-2024-7765 was published on 2025-03-20 and last updated on 2026-06-17.

CVE-2024-7765

CVE-2024-7765 is a high-severity vulnerability in H2o with a CVSS 3.x base score of 7.5. 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-409.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-6953
Weakness: CWE-409
Affected product: H2o
Published: 2025-03-20
Last modified: 2026-06-17

Description

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.

Frequently asked questions

What is CVE-2024-7765?: In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.
How severe is CVE-2024-7765?: CVE-2024-7765 has a CVSS 3.x base score of 7.5, rated high 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 high.
Is CVE-2024-7765 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-7765?: CVE-2024-7765 affects H2o. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-7765?: 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-2024-7765 have an EU (EUVD) identifier?: Yes. CVE-2024-7765 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6953.
When was CVE-2024-7765 published?: CVE-2024-7765 was published on 2025-03-20 and last updated on 2026-06-17.

References

https://huntr.com/bounties/0e58b1a5-bdca-4e60-af92-09de9c76a9ff

Affected products (1)

cpe:2.3:a:h2o:h2o:3.46.0.2:*:*:*:*:*:*:*

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