CVE-2023-38674Public exploitNetwork attack vector

Runtime crash via zero-dimension stride division

Published Jan 3, 2024 · Updated Jun 6, 2025

Divide-by-zero in paddle.nanmedian in PaddlePaddle before 2.6.0 allows attackers to crash the runtime with an empty tensor. The CPU and GPU nanmedian kernels derive stride from the tensor's final dimension and divide numel by that unchecked value. The vulnerable function must process a tensor whose final dimension is zero; the documented proof of concept terminates the hosting process, affecting availability only.

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

Divide-by-zero in paddle.nanmedian in PaddlePaddle before 2.6.0 allows attackers to crash the runtime with an empty tensor. The CPU and GPU nanmedian kernels derive stride from the tensor's final dimension and divide numel by that unchecked value. The vulnerable function must process a tensor whose final dimension is zero; the documented proof of concept terminates the hosting process, affecting availability only.

The record

CVE
CVE-2023-38674
Published
Jan 3, 2024
Updated
Jun 6, 2025
Vendor
PaddlePaddle
Product
PaddlePaddle
Classifications
CWE-369, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 6, 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

4.7Baidu, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L
7.5NIST NVDCVSS: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-369Divide By Zero
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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