Staging Environment: Content and features may be unstable or change without notice.
Advisory details: pypa / pyassimp/PYSEC-2025-161
Advisory ID pypa/pyassimp/PYSEC-2025-161
Aliases CVE-2025-2750
PYSEC-2025-161
Summary A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Status Published
Exploitability 0.5
Weighted Severity 7.9
Risk 4.0
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 8.8 https://github.com/pypa/advisory-database/blob/main/vulns/pyassimp/PYSEC-2025-161.yaml
Reference id Reference type URL
6011 Bug https://github.com/assimp/assimp/issues/6011
6011#issue-2877369004 Bug https://github.com/assimp/assimp/issues/6011#issue-2877369004
?ctiid.300855 Other https://vuldb.com/?ctiid.300855
?id.300855 Advisory https://vuldb.com/?id.300855
?submit.517783 Advisory https://vuldb.com/?submit.517783
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/pypa/advisory-database/blob/main/vulns/pyassimp/PYSEC-2025-161.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/2025-03-31T17:36:47Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2025/2xxx/CVE-2025-2750.json

Source Advisory: vulnrichment/CVE-2025-2750

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