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Description

A security flaw has been discovered in Assimp up to 6.0.4. Affected is the function HL1MDLLoader::extract_anim_value of the file HL1MDLLoader.cpp of the component Half-Life 1 MDL Loader. Performing a manipulation of the argument num.total results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. The project tagged the reported issue as bug.

PUBLISHED Reserved 2026-05-31 | Published 2026-06-01 | Updated 2026-06-01 | Assigner VulDB




MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 5.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
4.3AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Heap-based Buffer Overflow

Memory Corruption

Timeline

2026-05-31:Advisory disclosed
2026-05-31:VulDB entry created
2026-05-31:VulDB entry last update

Credits

TYGLS (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/367510 (VDB-367510 | Assimp Half-Life 1 MDL Loader HL1MDLLoader.cpp extract_anim_value heap-based overflow) vdb-entry technical-description

vuldb.com/vuln/367510/cti (VDB-367510 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/cve/CVE-2026-10231 (CVE-2026-10231 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/821191 (Submit #821191 | Assimp commit 17c12da Heap-based Buffer Overflow) third-party-advisory

github.com/assimp/assimp/issues/6616 issue-tracking

github.com/user-attachments/files/27195744/poc.zip exploit

github.com/assimp/assimp/ product

cve.org (CVE-2026-10231)

nvd.nist.gov (CVE-2026-10231)

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