Staging Environment: Content and features may be unstable or change without notice.
Advisory details: pypa / pyassimp/PYSEC-2025-169
Advisory ID pypa/pyassimp/PYSEC-2025-169
Aliases CVE-2025-3158
PYSEC-2025-169
Summary A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3. Affected by this issue is the function Assimp::LWO::AnimResolver::UpdateAnimRangeSetup of the file code/AssetLib/LWO/LWOAnimation.cpp of the component LWO File Handler. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
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 7.8 https://github.com/pypa/advisory-database/blob/main/vulns/pyassimp/PYSEC-2025-169.yaml
Reference id Reference type URL
6023 Bug https://github.com/assimp/assimp/issues/6023
6023#issue-2877381000 Bug https://github.com/assimp/assimp/issues/6023#issue-2877381000
?ctiid.303104 Other https://vuldb.com/?ctiid.303104
?id.303104 Advisory https://vuldb.com/?id.303104
?submit.542246 Advisory https://vuldb.com/?submit.542246
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:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/pypa/advisory-database/blob/main/vulns/pyassimp/PYSEC-2025-169.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/2025-04-03T15:22:28Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2025/3xxx/CVE-2025-3158.json

Source Advisory: vulnrichment/CVE-2025-3158

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