CVE-2023-38671Public exploitNetwork attack vector

Memory disclosure or crash via unchecked negative axes

Published Jul 26, 2023 · Updated Oct 23, 2024

Heap buffer overflow in paddle.trace in PaddlePaddle before 2.5.0 allows attackers to read memory or crash a process via invalid axes. TraceInferMeta normalizes negative axis1 and axis2 values but checks only their upper bounds, allowing excessively negative results to index outside the dimension array. Reachability requires an application to pass attacker-controlled axis arguments to paddle.trace; triggering the overflow can disclose process memory, crash the process, or corrupt memory.

CVSS severity8.3
High
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in paddle.trace in PaddlePaddle before 2.5.0 allows attackers to read memory or crash a process via invalid axes. TraceInferMeta normalizes negative axis1 and axis2 values but checks only their upper bounds, allowing excessively negative results to index outside the dimension array. Reachability requires an application to pass attacker-controlled axis arguments to paddle.trace; triggering the overflow can disclose process memory, crash the process, or corrupt memory.

The record

CVE
CVE-2023-38671
Published
Jul 26, 2023
Updated
Oct 23, 2024
Vendor
PaddlePaddle
Product
PaddlePaddle
Classifications
CWE-787, CWE-120
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

9.8NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.3Baidu, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/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 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-787Out-of-bounds Write
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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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