Is there a public PoC exploit available for EUVD-2026-33564?

Yes, a public proof-of-concept exploit is available for EUVD-2026-33564. Prioritise patching immediately. EPSS: 0.0%.

Assimp EUVD-2026-33564

Q: What is the CVSS score of EUVD-2026-33564?

EUVD-2026-33564 has a CVSS 4.0 base score of 1.9 (Low). CVSS vector: CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

| CVE-2026-10231 LOW

Heap-based Buffer Overflow (CWE-122)

2026-06-01 VulDB

GHSA-wc3j-ch7g-2h36

Buffer Overflow Heap Overflow Assimp N A

1.9

CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY

1.9 LOW

CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from Vendor (VulDB) · only source for this CVE.

CVSS VectorVendor: VulDB

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Jun 01, 2026 - 08:22 NVD

MEDIUM LOW

CVSS changed

Jun 01, 2026 - 08:22 NVD

5.3 (MEDIUM) 1.9 (LOW)

Analysis Generated

Jun 01, 2026 - 07:51 vuln.today

DescriptionCVE.org

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.

AnalysisAI

Heap-based buffer overflow in Assimp's Half-Life 1 MDL Loader allows a local authenticated attacker to corrupt memory via a crafted MDL file, potentially achieving limited confidentiality, integrity, and availability impact. Affected versions span all releases up to and including 6.0.4 of the open-source asset import library. No public exploit identified at time of analysis as active exploitation, but a proof-of-concept has been publicly released, and the CVSS temporal vector confirms exploit code existence (E:P).

Technical ContextAI

Assimp (Open Asset Import Library) is a widely embedded C++ library used by game engines, 3D tools, and media applications to import dozens of 3D model formats. The vulnerability resides in HL1MDLLoader.cpp, specifically the extract_anim_value() function responsible for parsing Half-Life 1 MDL animation data. CWE-122 (Heap-based Buffer Overflow) indicates that the function fails to validate the num.total argument before writing to a heap-allocated buffer, allowing an attacker-controlled value to cause an out-of-bounds write on the heap. The affected CPE is cpe:2.3:a:n/a:assimp:*:*:*:*:*:*:*:* covering all versions through 6.0.4. Because Assimp is commonly statically linked into third-party applications, the attack surface extends to any software that processes untrusted MDL files using this library.

RemediationAI

No vendor-released patched version has been confirmed from available data; the fix status should be monitored via the upstream GitHub issue at https://github.com/assimp/assimp/issues/6616 and the Assimp repository at https://github.com/assimp/assimp/. Until a patched release is available, the primary compensating control is to disable or refuse processing of Half-Life 1 MDL files in any application using Assimp, which eliminates the vulnerable code path entirely - the trade-off is loss of HL1 MDL format support. A second control is to restrict the file-parsing pipeline so that only MDL files from verified, trusted sources are processed, reducing exposure to malicious crafted files. If Assimp is embedded as a static library, downstream vendors should track the upstream fix and rebuild against the patched version once released. Application-level sandboxing (e.g., processing untrusted assets in an isolated process with restricted heap permissions) can limit blast radius if a heap overflow is triggered.