How severe is CVE-2025-3159?

CVE-2025-3159 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-3159 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3159?

CVE-2025-3159 affects Assimp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3159?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-3159 have an EU (EUVD) identifier?

Yes. CVE-2025-3159 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-9625.

When was CVE-2025-3159 published?

CVE-2025-3159 was published on 2025-04-03 and last updated on 2026-06-17.

CVE-2025-3159

CVE-2025-3159 is a medium-severity vulnerability in Assimp with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 4.3
CVSS v4: 4.8
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-9625
Weakness: CWE-119
Affected product: Assimp
Published: 2025-04-03
Last modified: 2026-06-17

Description

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::ASE::Parser::ParseLV4MeshBonesVertices of the file code/AssetLib/ASE/ASEParser.cpp of the component ASE File Handler. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The identifier of the patch is e8a6286542924e628e02749c4f5ac4f91fdae71b. It is recommended to apply a patch to fix this issue.

Frequently asked questions

What is CVE-2025-3159?: A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::ASE::Parser::ParseLV4MeshBonesVertices of the file code/AssetLib/ASE/ASEParser.cpp of the component ASE File Handler. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The identifier of the patch is e8a6286542924e628e02749c4f5ac4f91fdae71b. It is recommended to apply a patch to fix this issue.
How severe is CVE-2025-3159?: CVE-2025-3159 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-3159 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3159?: CVE-2025-3159 affects Assimp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3159?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-3159 have an EU (EUVD) identifier?: Yes. CVE-2025-3159 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-9625.
When was CVE-2025-3159 published?: CVE-2025-3159 was published on 2025-04-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:assimp:assimp:5.4.3:*:*:*:*:*:*:*

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