CVE-2025-9905Public exploit

Code execution via ignored HDF5 safe mode

Published Sep 19, 2025 · Updated Sep 19, 2025

Code execution in Keras 3.0.0 through 3.11.2 allows attackers to run Python code by inducing a user to load a crafted HDF5 model. The load_model path delegates .h5 and .hdf5 inputs to legacy_h5_format.load_model_from_hdf5 without passing or checking safe_mode, permitting Lambda-layer pickled code to deserialize. Exploitation requires a user or application to load an attacker-supplied legacy model; the payload runs with the Keras process's privileges.

CVSS severity7.3
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in Keras 3.0.0 through 3.11.2 allows attackers to run Python code by inducing a user to load a crafted HDF5 model. The load_model path delegates .h5 and .hdf5 inputs to legacy_h5_format.load_model_from_hdf5 without passing or checking safe_mode, permitting Lambda-layer pickled code to deserialize. Exploitation requires a user or application to load an attacker-supplied legacy model; the payload runs with the Keras process's privileges.

The record

CVE
CVE-2025-9905
Published
Sep 19, 2025
Updated
Sep 19, 2025
Vendor
Keras
Product
Keras
Classifications
CWE-913, CAPEC-175, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 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=3.0.0 <=3.11.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Keras · Kerasversion=3.0.0 <=3.11.2

Published CVSS scores

8.7GitHubCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
7.3GoogleCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
7.3NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:R/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.

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-913Improper Control of Dynamically-Managed Code Resources
CAPEC-175Code Inclusion
T1204.002Malicious File

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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