What is CVE-2025-10769?

CVE-2025-10769 is a medium-severity vulnerability in H2o, classified under Improper Input Validation. CVSS score: 6.3/10. Published 2025-09-21.

How severe is CVE-2025-10769?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Is CVE-2025-10769 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in H2o

CVE-2025-10769

A vulnerability has been found in h2oai h2o-3 up to 3.46.08. This affects an unknown function of the file /99/ImportSQLTable of the component H2 JDBC Driver. Such manipulation of the argument connection_url leads to deserialization. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2025-09-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (42.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

H2o
H2oai H2o-3 — versions 3.46.08

Weakness classification (CWE)

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
github.com/ez-lbz/poc/issues/51 (issue-tracking, exploit, Broken Link)
github.com/ez-lbz/poc/issues/51 (issue-tracking, exploit, Broken Link)
huntr.com/bounties/4066ce21-7148-44f5-8336-b1674c2f588d (related, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-10769?: CVE-2025-10769 is a medium-severity vulnerability in H2o, classified under Improper Input Validation. CVSS score: 6.3/10. Published 2025-09-21.
How severe is CVE-2025-10769?: Medium severity. CVSS v3 base score is 6.3 out of 10.
Is CVE-2025-10769 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.