CVE-2023-52303Public exploitNetwork attack vector

Runtime crash via invalid tensor dimensions

Published Jan 3, 2024 · Updated Jun 17, 2025

Null pointer dereference in paddle.put_along_axis in PaddlePaddle before 2.6.0 allows attackers to crash the runtime with invalid tensor dimensions. The operator fails to reject a dimensionally invalid combination of destination, index, and scalar-value tensors before processing it, resulting in a null pointer dereference. Triggering the flaw requires execution of the affected API in a consuming process and terminates that runtime, with no reported data disclosure or modification.

CVSS severity4.7
Medium
EPSS probability0.49%
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.put_along_axis in PaddlePaddle before 2.6.0 allows attackers to crash the runtime with invalid tensor dimensions. The operator fails to reject a dimensionally invalid combination of destination, index, and scalar-value tensors before processing it, resulting in a null pointer dereference. Triggering the flaw requires execution of the affected API in a consuming process and terminates that runtime, with no reported data disclosure or modification.

The record

CVE
CVE-2023-52303
Published
Jan 3, 2024
Updated
Jun 17, 2025
Vendor
PaddlePaddle
Product
PaddlePaddle
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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=0 <2.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PaddlePaddle · PaddlePaddleversion=0 <2.6.0

Published CVSS scores

4.7BaiduCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L
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 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-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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