How severe is CVE-2025-2591?

CVE-2025-2591 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-2591 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-2591?

CVE-2025-2591 affects Assimp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-2591?

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

Does CVE-2025-2591 have an EU (EUVD) identifier?

Yes. CVE-2025-2591 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7251.

When was CVE-2025-2591 published?

CVE-2025-2591 was published on 2025-03-21 and last updated on 2026-06-17.

CVE-2025-2591

CVE-2025-2591 is a medium-severity vulnerability in Assimp with a CVSS 3.x base score of 4.3. 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-369.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 5.0
CVSS v4: 5.3
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-7251
Weakness: CWE-369
Affected product: Assimp
Published: 2025-03-21
Last modified: 2026-06-17

Description

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Frequently asked questions

What is CVE-2025-2591?: A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.
How severe is CVE-2025-2591?: CVE-2025-2591 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-2591 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-2591?: CVE-2025-2591 affects Assimp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-2591?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-2591 have an EU (EUVD) identifier?: Yes. CVE-2025-2591 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7251.
When was CVE-2025-2591 published?: CVE-2025-2591 was published on 2025-03-21 and last updated on 2026-06-17.

References

Affected products (1)

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

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