TI-2025-02259 Aliases CVE-2025-2591 GHSA-6q3p-m444-94qp

Open Asset Import Library Assimp MDLLoader.cpp InternReadFile_Quake1 divide by zero

MEDIUM 57CWE-369Published 2025-03-21 · Updated 2025-03-21

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-369.

Summary

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0065 51st percentileScored 2026-11-07

Public exploit Yes 2 exploit referencesTagged by NVD and the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Open Asset Import Library	Assimp	5.4.3	—	No fix listed	CNA

Assimp VendorOpen Asset Import Library Affected 5.4.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:assimp:assimp:5.4.3:::::::*	5.4.3	Vulnerable	Open Asset Import Library

cpe:2.3:a:assimp:assimp:5.4.3:*:*:*:*:*:*:* Versions 5.4.3 Vulnerable ·Open Asset Import Library

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-2591
2026-10-03 Alias added: GHSA-6q3p-m444-94qp
2026-10-14 EPSS moved to the 50th–90th percentile

References

Exploit 2

Patch 2

TI-2022-22579 An issue was discovered with assimp 5.1.4, a use after free occurred in function… CVSS 3.1HIGH 8.8
TI-2024-32382 An issue in assimp v.5.4.3 allows a local attacker to execute arbitrary code via the… CVSS 3.1HIGH 8.4
TI-2024-35797 A heap-buffer-overflow vulnerability was discovered in the SkipSpacesAndLineEnd function… CVSS 3.1MEDIUM 6.2
TI-2024-32385 A segmentation fault (SEGV) was detected in the SortByPTypeProcess::Execute function in… CVSS 3.1MEDIUM 6.2
TI-2024-32384 A segmentation fault (SEGV) was detected in the… CVSS 3.1MEDIUM 5.5
TI-2024-32383 A heap-buffer-overflow vulnerability has been identified in the… CVSS 3.1MEDIUM 5.5

See all 46 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences