| Title | Assimp commit 17c12da Heap-based Buffer Overflow |
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| Description | A heap-buffer-overflow vulnerability exists in Assimp's glTF2 importer within the `glTFCommon::CopyValue` function at `glTFCommon.h:178`. The flaw is caused by insufficient input validation when parsing node transformation matrices. When processing a malicious glTF 2.0 file with an invalid matrix that has insufficient data length, the program allocates only 1-byte heap memory but attempts to read 64 bytes (16 float values for a 4x4 matrix) without boundary checks. This out-of-bounds memory read leads to an immediate application crash and may potentially expose sensitive heap memory information. Remote attackers can exploit this vulnerability to cause a denial-of-service (DoS) condition or information disclosure via a crafted glTF file. |
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| Source | ⚠️ https://github.com/assimp/assimp/issues/6612 |
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| User | TYGLS (UID 94774) |
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| Submission | 05/07/2026 04:42 (2 months ago) |
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| Moderation | 05/31/2026 08:13 (24 days later) |
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| Status | Accepted |
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| VulDB entry | 367480 [Assimp up to 6.0.4 4x4 Matrix Parser glTFCommon.h glTFCommon::CopyValue heap-based overflow] |
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| Points | 20 |
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