How severe is CVE-2025-6120?

CVE-2025-6120 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-2025-6120 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-6120?

CVE-2025-6120 affects Assimp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-6120?

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

Does CVE-2025-6120 have an EU (EUVD) identifier?

Yes. CVE-2025-6120 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18386.

When was CVE-2025-6120 published?

CVE-2025-6120 was published on 2025-06-16 and last updated on 2026-06-17.

CVE-2025-6120

CVE-2025-6120 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: 1.9
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18386
Weakness: CWE-119
Affected product: Assimp
Published: 2025-06-16
Last modified: 2026-06-17

Description

A vulnerability classified as critical was found in Open Asset Import Library Assimp up to 5.4.3. Affected by this vulnerability is the function read_meshes in the library assimp/code/AssetLib/MDL/HalfLife/HL1MDLLoader.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.

Frequently asked questions

What is CVE-2025-6120?: A vulnerability classified as critical was found in Open Asset Import Library Assimp up to 5.4.3. Affected by this vulnerability is the function read_meshes in the library assimp/code/AssetLib/MDL/HalfLife/HL1MDLLoader.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.
How severe is CVE-2025-6120?: CVE-2025-6120 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-2025-6120 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-6120?: CVE-2025-6120 affects Assimp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-6120?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-6120 have an EU (EUVD) identifier?: Yes. CVE-2025-6120 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18386.
When was CVE-2025-6120 published?: CVE-2025-6120 was published on 2025-06-16 and last updated on 2026-06-17.

References

Affected products (1)

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

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