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Vulnerability · Published Jun 1, 2026 · Assigned by VulDB

CVE-2026-10231Assimp Half-Life 1 MDL Loader HL1MDLLoader.cpp extract_anim_value heap-based overflow

Medium 5.3

In plain English

A medium-severity heap buffer overflow in Assimp. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.1%top 97.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12assimpno fix listedDEBIAN-CVE-2026-10231
Debian:13assimpno fix listedDEBIAN-CVE-2026-10231
Debian:14assimpno fix listedDEBIAN-CVE-2026-10231
Ubuntu:22.04:LTSassimpno fix listedUBUNTU-CVE-2026-10231
Ubuntu:24.04:LTSassimpno fix listedUBUNTU-CVE-2026-10231
Ubuntu:25.10assimpno fix listedUBUNTU-CVE-2026-10231
Ubuntu:26.04:LTSassimpno fix listedUBUNTU-CVE-2026-10231
Ubuntu:26.10assimpno fix listedUBUNTU-CVE-2026-10231

Affected products (as reported)

VendorProductVersions
n/a Assimp 6.0.06.0.16.0.26.0.36.0.4

Weakness: CWE-122, CWE-119 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References