Buffer overflow in Open Asset Import Library Assimp
CVE-2026-82591
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (6.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Open Asset Import Library Assimp — versions 6.0.0, 6.0.1, 6.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/397086 (technical-description, vdb-entry)
- vuldb.com/vuln/397086/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-82591 (third-party-advisory)
- vuldb.com/submit/892413 (third-party-advisory)
- github.com/assimp/assimp/pull/6718 (issue-tracking, patch)
- github.com/assimp/assimp/commit/bf9dabb617c46e5133dac65cca6bff177917afcb (patch)
Frequently asked questions
- What is CVE-2026-82591?
- CVE-2026-82591 is a medium-severity vulnerability in Open Asset Import Library Assimp, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-08-30.
- How severe is CVE-2026-82591?
- Medium severity. CVSS v3 base score is 5.3 out of 10.