CVE-2025-5201

A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been classified as problematic. Affected is 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. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.

Database specific

{
    "cna_assigner":  "VulDB",
    "cwe_ids":  [
        "CWE-119",
        "CWE-125"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/5xxx/CVE-2025-5201.json"
}

References

Affected packages

Git / github.com/assimp/assimp

Affected ranges

Type

GIT

Repo

https://github.com/assimp/assimp

Events

Introduced

c35200e38ea8f058812b83de2ef32c6093b0ece2

Fixed

c35200e38ea8f058812b83de2ef32c6093b0ece2

Database specific

Show details

{
    "cpe":  "cpe:2.3:a:assimp:assimp:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "5.4.3"
        },
        {
            "last_affected":  "5.4.3"
        },
        {
            "introduced":  "0"
        },
        {
            "fixed":  "5.4.3"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

5.*

5.4.3

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-5201.json"

vanir_signatures

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    {
        "deprecated":  false,
        "digest":  {
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                "259836610294362557380643058981394434250"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2025-5201-20a4c35d",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/assimp/assimp/commit/c35200e38ea8f058812b83de2ef32c6093b0ece2",
        "target":  {
            "file":  "test/unit/utVersion.cpp"
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        "digest":  {
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        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/assimp/assimp/commit/c35200e38ea8f058812b83de2ef32c6093b0ece2",
        "target":  {
            "file":  "test/unit/utVersion.cpp",
            "function":  "TEST_F"
        }
    }
]

vanir_signatures_modified

"2026-08-18T17:53:20Z"