Open Asset Import Library Assimp MD5Loader.cpp MakeDataUnique heap-based overflow (CVE-2026-82591) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-82591

Open Asset Import Library Assimp MD5Loader.cpp MakeDataUnique heap-based overflow

Answer in brief

CVE-2026-82591 records a Unknown severity vulnerability in Open Asset Import Library Assimp MD5Loader.cpp MakeDataUnique heap-based overflow. The current sources do not mark it as known exploited. The current feed maps Open Asset Import Library/Assimp (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 30, 2026Updated Aug 30, 2026Source checked Aug 31, 2026First seen by HOL Aug 30, 2026Material review Aug 30, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Open Asset Import Library/Assimp (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Open Asset Import Library/Assimpgeneric	6.0.0 \|\| 6.0.1 \|\| 6.0.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Open Asset Import Library/Assimp.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 30, 2026

Sources and claim methodology

Upstream source description

A security vulnerability has been detected in Open Asset Import Library Assimp up to 6.0.2. The impacted element is the function MD5Importer::MakeDataUnique of the file code/AssetLib/MD5/MD5Loader.cpp. The manipulation of the argument iNewIndex leads to heap-based buffer overflow. The attack can only be performed from a local environment. The identifier of the patch is bf9dabb617c46e5133dac65cca6bff177917afcb. Applying a patch is the recommended action to fix this issue.

Quoted source text, attributed separately from HOL analysis.