PT-2025-16201 · Assimp+1 · Assimp+1

Chen Lihai + 1 · Published 2025-01-01 · Updated 2026-02-06 · CVE-2025-3549

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions: Open Asset Import Library Assimp version 5.4.3

Description: A critical issue was found in the Open Asset Import Library Assimp, affecting the Assimp::MD3Importer::ValidateSurfaceHeaderOffsets function of the MD3Loader.cpp file in the File Handler component. This issue leads to a heap-based buffer overflow. The attack must be launched locally.

Recommendations: For Open Asset Import Library Assimp version 5.4.3, as a temporary workaround, consider disabling the Assimp::MD3Importer::ValidateSurfaceHeaderOffsets function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Heap Based Buffer Overflow

Buffer Overflow

Weakness Enumeration

CWE-122

CWE-119

Related Identifiers

CVE-2025-3549

OESA-2026-1267

OESA-2026-1268

OESA-2026-1269

OESA-2026-1327

OESA-2026-1330

PYSEC-2025-171

Affected Products

Assimp

Debian

References · 37

• 🔥 https://github.com/assimp/assimp/issues/6070 · Exploit
• 🔥❌ https://github.com/user-attachments/files/19580481/Assimp_MD3Importer_ValidateSurfaceHeaderOffsets-hbo.zip · Exploit, Deleted
• https://security-tracker.debian.org/tracker/CVE-2025-3549 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-1330 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-3549 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-3549 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-3549 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-2756 · Security Note
• https://osv.dev/vulnerability/OESA-2026-1327 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-3549 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-1269 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-3549 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-5165 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-5168 · Security Note
• https://osv.dev/vulnerability/OESA-2026-1268 · Vendor Advisory