PT-2025-22931 · Assimp+2 · Assimp+2

Clesmian · Published 2025-05-26 · Updated 2026-04-25 · CVE-2025-5201

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description A vulnerability was found in the Open Asset Import Library Assimp. It has been classified as problematic and affects the function LWOImporter::CountVertsAndFacesLWO2 of the file assimp/code/AssetLib/LWO/LWOLoader.cpp. The manipulation leads to out-of-bounds read. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.

Recommendations As a temporary workaround, consider disabling the LWOImporter::CountVertsAndFacesLWO2 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

Out of bounds Read

Buffer Overflow

Weakness Enumeration

CWE-125

CWE-119

Related Identifiers

ALT-PU-2025-10063

CVE-2025-5201

OESA-2026-1543

OESA-2026-1658

OESA-2026-1659

OESA-2026-1969

OESA-2026-2055

OESA-2026-2056

Affected Products

Alt Linux

Assimp

Debian

References · 38

• 🔥 https://github.com/assimp/assimp/issues/6174 · Exploit
• 🔥 https://github.com/assimp/assimp/issues/6173 · Exploit
• 🔥❌ https://github.com/user-attachments/files/20209125/line-832-reproducer.zip · Exploit, Deleted
• https://osv.dev/vulnerability/OESA-2026-2055 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-5203 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-5202 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-5201 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2056 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-5201 · Security Note
• https://osv.dev/vulnerability/CVE-2025-5201 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-2756 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-5201 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-2755 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-5200 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-5204 · Security Note