CVE-2025-10769Network attack vector

Unspecified impact via JDBC URL deserialization

Published Sep 21, 2025 · Updated Sep 21, 2025

Deserialization in H2O-3 3.46.08 allows remote authenticated users to cause unspecified impact via a crafted JDBC connection URL. The /99/ImportSQLTable endpoint processes the attacker-controlled connection_url and triggers deserialization in the H2 JDBC Driver. Network access and low privileges are required under the CNA assessment; the deserialized type, resulting operation, and concrete consequence are unpublished.

CVSS severity9.8
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in H2O-3 3.46.08 allows remote authenticated users to cause unspecified impact via a crafted JDBC connection URL. The /99/ImportSQLTable endpoint processes the attacker-controlled connection_url and triggers deserialization in the H2 JDBC Driver. Network access and low privileges are required under the CNA assessment; the deserialized type, resulting operation, and concrete consequence are unpublished.

The record

CVE
CVE-2025-10769
Published
Sep 21, 2025
Updated
Sep 21, 2025
Vendor
H2O.ai
Product
H2O-3
Classifications
CWE-502, CWE-20, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.46.08

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

H2O.ai · H2O-3version=3.46.08

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
CWE-20Improper Input Validation
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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