CVE-2026-129480: Assimp through 6.0.6 Heap Out-of-Bounds Read via MD2 Importer frameSize

Q: Who is exposed to this issue?

Applications using Assimp through 6.0.6 are exposed when they import attacker-controlled MD2 files. The vulnerable code is in the MD2 importer.

Q: What must an attacker provide to trigger the vulnerability?

An attacker must supply a crafted .md2 file with an unvalidated stored frameSize header field and have it loaded with a non-zero keyframe selected.

Q: What impact can exploitation have?

The crafted file can cause the application to read past the file buffer, potentially crashing the application or leaking adjacent heap memory into the imported mesh.

Published Nov 15, 2026

Updated

Assimp through 6.0.6 contains a heap out-of-bounds read vulnerability ...

Affected Software

5 affected components

debian/assimp*

Assimp Assimp<=6.0.6

debian/assimp<=5.2.5~ds0-1, <=5.4.3+ds-2, <=6.0.5+ds-1, <=6.0.6+ds-1

Frequently Asked Questions

Who is exposed to this issue?

Applications using Assimp through 6.0.6 are exposed when they import attacker-controlled MD2 files. The vulnerable code is in the MD2 importer.

What must an attacker provide to trigger the vulnerability?

An attacker must supply a crafted .md2 file with an unvalidated stored frameSize header field and have it loaded with a non-zero keyframe selected.

What impact can exploitation have?

The crafted file can cause the application to read past the file buffer, potentially crashing the application or leaking adjacent heap memory into the imported mesh.

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Contact

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