CVE-2024-31584Network attack vector

Memory corruption via oversized mobile IValue count

Published Apr 19, 2024 · Updated Aug 2, 2024

Out-of-bounds read in PyTorch used by PyTorch Lightning 2.2.0 allows remote authenticated users to corrupt memory via a crafted mobile module. FlatbufferLoader trusts mobile_bytecode's mobile_ivalue_size when it exceeds the ivalues vector, so module parsing reads beyond that vector. Exploitation requires authenticated network access and user interaction to load an attacker-supplied mobile module; arbitrary code execution is not established.

CVSS severity5.5
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in PyTorch used by PyTorch Lightning 2.2.0 allows remote authenticated users to corrupt memory via a crafted mobile module. FlatbufferLoader trusts mobile_bytecode's mobile_ivalue_size when it exceeds the ivalues vector, so module parsing reads beyond that vector. Exploitation requires authenticated network access and user interaction to load an attacker-supplied mobile module; arbitrary code execution is not established.

The record

CVE
CVE-2024-31584
Published
Apr 19, 2024
Updated
Aug 2, 2024
Vendor
Lightning AI
Product
PyTorch Lightning
Classifications
CWE-125, CAPEC-540
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=2.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Lightning AI · PyTorch Lightningversion=2.2.0

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

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 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-125Out-of-bounds Read
CAPEC-540Overread Buffers

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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