CVE-2023-38670Public exploitNetwork attack vector

Process crash via unchecked multi-element axis tensor

Published Jul 26, 2023 · Updated Oct 23, 2024

Null pointer dereference in paddle.flip in PaddlePaddle before 2.5.0 allows context-dependent attackers to crash a consuming process. PyObject_CheckLongOrToLong accepts a tensor as a scalar integer without verifying that it contains one element, so a multi-element axis reaches flip conversion and dereferences a null pointer. Exploitation requires a consuming application to pass attacker-controlled axis data to paddle.flip, terminating that process without reported data modification.

CVSS severity7.5
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in paddle.flip in PaddlePaddle before 2.5.0 allows context-dependent attackers to crash a consuming process. PyObject_CheckLongOrToLong accepts a tensor as a scalar integer without verifying that it contains one element, so a multi-element axis reaches flip conversion and dereferences a null pointer. Exploitation requires a consuming application to pass attacker-controlled axis data to paddle.flip, terminating that process without reported data modification.

The record

CVE
CVE-2023-38670
Published
Jul 26, 2023
Updated
Oct 23, 2024
Vendor
PaddlePaddle
Product
PaddlePaddle
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 23, 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=0 <2.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PaddlePaddle · PaddlePaddleversion=0 <2.5.0

Published CVSS scores

4.7BaiduCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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