CVE-2025-9905

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Source
https://cve.org/CVERecord?id=CVE-2025-9905
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-9905.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-9905
Aliases
Downstream
Related
Published
2025-09-19T09:15:36.033Z
Modified
2026-05-20T08:11:31.697666270Z
Severity
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

The Keras Model.loadmodel method can be exploited to achieve arbitrary code execution, even with safemode=True.

One can create a specially crafted .h5/.hdf5 model archive that, when loaded via Model.load_model, will trigger arbitrary code to be executed.

This is achieved by crafting a special .h5 archive file that uses the Lambda layer feature of keras which allows arbitrary Python code in the form of pickled code. The vulnerability comes from the fact that the safe_mode=True option is not honored when reading .h5 archives.

Note that the .h5/.hdf5 format is a legacy format supported by Keras 3 for backwards compatibility.

References

Affected packages

Git / github.com/keras-team/keras

Affected ranges

Type
GIT
Repo
https://github.com/keras-team/keras
Events
Introduced
9c675a9a45e5e8244163fea82efc6066722608a1
Fixed
b491c860fc2750e2b6006b55358d3251dbb4a9f0
Database specific 
{
    "versions": [
        {
            "introduced": "3.0.0"
        },
        {
            "fixed": "3.11.3"
        }
    ]
}

Affected versions

v3.*
v3.0.0
v3.0.1
v3.0.2
v3.0.3
v3.0.4
v3.0.5
v3.1.0
v3.1.1
v3.10.0
v3.11.0
v3.11.1
v3.11.2
v3.2.0
v3.2.1
v3.3.0
v3.3.1
v3.3.2
v3.3.3
v3.4.0
v3.4.1
v3.5.0
v3.6.0
v3.7.0
v3.8.0
v3.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-9905.json"