CVE-2024-8616Public exploitNetwork attack vector

Unauthenticated file overwrite via model export path

Published Mar 20, 2025 · Updated Mar 20, 2025

Path manipulation in H2O-3 3.46.0 allows remote attackers to overwrite arbitrary server files through the model JSON export endpoint. The exportModelDetails function in ModelsHandler.java passes the user-controlled mexport.dir value to the filesystem write without restricting the destination path. No authentication or user interaction is required, and the overwrite can corrupt any file writable by the H2O process.

CVSS severity8.2
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path manipulation in H2O-3 3.46.0 allows remote attackers to overwrite arbitrary server files through the model JSON export endpoint. The exportModelDetails function in ModelsHandler.java passes the user-controlled mexport.dir value to the filesystem write without restricting the destination path. No authentication or user interaction is required, and the overwrite can corrupt any file writable by the H2O process.

The record

CVE
CVE-2024-8616
Published
Mar 20, 2025
Updated
Mar 20, 2025
Vendor
H2O.ai
Product
H2O-3
Classifications
CWE-73, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 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=unspecified <=latest

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

H2O.ai · H2O-3version=unspecified <=latest

Published CVSS scores

8.2huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
T1565.001Stored Data Manipulation

Public exploit references

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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