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Advisory details: pypa / pyassimp/PYSEC-2025-176
Advisory ID pypa/pyassimp/PYSEC-2025-176
Aliases CVE-2025-5169
PYSEC-2025-176
Summary A vulnerability classified as problematic has been found in Open Asset Import Library Assimp 5.4.3. This affects the function MDLImporter::InternReadFile_3DGS_MDL345 of the file assimp/code/AssetLib/MDL/MDLLoader.cpp. The manipulation leads to out-of-bounds read. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.
Status Published
Exploitability 0.5
Weighted Severity 5.0
Risk 2.5
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv3.1 5.5 https://github.com/pypa/advisory-database/blob/main/vulns/pyassimp/PYSEC-2025-176.yaml
Reference id Reference type URL
6128 Bug https://github.com/assimp/assimp/issues/6128
6171 Bug https://github.com/assimp/assimp/issues/6171
?ctiid.310257 Other https://vuldb.com/?ctiid.310257
?id.310257 Advisory https://vuldb.com/?id.310257
reproducer.zip Exploit https://github.com/user-attachments/files/20208891/reproducer.zip
?submit.578004 Advisory https://vuldb.com/?submit.578004
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/pypa/advisory-database/blob/main/vulns/pyassimp/PYSEC-2025-176.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-05-27T14:19:37Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2025/5xxx/CVE-2025-5169.json

Source Advisory: vulnrichment/CVE-2025-5169

View SSVC decision tree 
[{'Exploitation': 'poc'},
 {'Automatable': 'no'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]