CVE-2025-5662CRITICAL 9.8EPSS p45.8%

CVE-2025-5662CVE-2025-5662

Description

A deserialization vulnerability exists in the H2O-3 REST API (POST /99/ImportSQLTable) that affects all versions up to 3.46.0.7. This vulnerability allows remote code execution (RCE) due to improper validation of JDBC connection parameters when using a Key-Value format. The vulnerability is present in the MySQL JDBC Driver version 8.0.19 and JDK version 8u112. The issue is resolved in version 3.46.0.8.

Scoring

CVSS 3.09.8 (CRITICAL)
VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.64% probability of exploitation · percentile 45.8% · 2026-06-18T12:00:27Z
Published2025-09-02
Last modified2026-04-15

Underlying weaknesses· 1

CWE-502

References

  1. https://github.com/h2oai/h2o-3/commit/f714edd6b8429c7a7211b779b6ec108a95b7382d
  2. https://huntr.com/bounties/057a743b-b2ec-4312-8262-ce0ff8bc161c

1

TypeTargetConfidenceTier
WeaknessDeserialization of Untrusted Datacwe-5020%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.