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Vulnerability · Published May 26, 2025 · Assigned by VulDB

CVE-2025-5166Open Asset Import Library Assimp MDC File Parser MDCLoader.cpp InternReadFile out-of-bounds

Low 3.3

In plain English

A low-severity out-of-bounds read in Assimp from Open Asset Import Library. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.3%top 81.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been classified as problematic. Affected is the function MDCImporter::InternReadFile of the file assimp/code/AssetLib/MDC/MDCLoader.cpp of the component MDC File Parser. The manipulation of the argument pcVerts leads to out-of-bounds read. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12assimpno fix listedDEBIAN-CVE-2025-5166
Debian:13assimpno fix listedDEBIAN-CVE-2025-5166
Debian:14assimp6.0.3+ds-1DEBIAN-CVE-2025-5166
PyPIpyassimpno fix listedPYSEC-2025-173
Ubuntu:22.04:LTSassimpno fix listedUBUNTU-CVE-2025-5166
Ubuntu:24.04:LTSassimpno fix listedUBUNTU-CVE-2025-5166
Ubuntu:25.10assimpno fix listedUBUNTU-CVE-2025-5166
Ubuntu:26.04:LTSassimpno fix listedUBUNTU-CVE-2025-5166
Ubuntu:26.10assimpno fix listedUBUNTU-CVE-2025-5166

Affected products (as reported)

VendorProductVersions
Open Asset Import Library Assimp 5.4.3

Weakness: CWE-125, CWE-119 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References