CVE-2025-5169Public exploit

Process crash via premature MDL frame read

Published May 26, 2025 · Updated May 28, 2025

Out-of-bounds read in Assimp 5.4.3 allows local users to crash an importing process via a crafted 3DGS MDL file. The MDLImporter::InternReadFile_3DGS_MDL345 parser reads pcFrames->type before its late and incomplete file-size check validates frame and vertex data. Exploitation requires local low-privileged access and processing of the supplied model; the demonstrated consequence is a heap-buffer-overflow abort.

CVSS severity5.5
Medium
EPSS probability0.25%
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 Assimp 5.4.3 allows local users to crash an importing process via a crafted 3DGS MDL file. The MDLImporter::InternReadFile_3DGS_MDL345 parser reads pcFrames->type before its late and incomplete file-size check validates frame and vertex data. Exploitation requires local low-privileged access and processing of the supplied model; the demonstrated consequence is a heap-buffer-overflow abort.

The record

CVE
CVE-2025-5169
Published
May 26, 2025
Updated
May 28, 2025
Vendor
Open Asset Import Library
Product
Assimp
Classifications
CWE-119, CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 28, 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=5.4.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Open Asset Import Library · Assimpversion=5.4.3

Published CVSS scores

3.3VulDB CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.3VulDB CNACVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.8VulDB CNACVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
1.7VulDB CNAAV:L/AC:L/Au:S/C:N/I:N/A:P

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-125Out-of-bounds Read

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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