CVE-2025-5203

Name: CVE-2025-5203
Creator: NVD / NIST
Published: 2025-05-26T20:15:19.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2025-5203 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been rated as problematic. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been rated as problematic. Affected by this issue is the function SkipSpaces in the library assimp/include/assimp/ParsingUtils.h. The manipulation leads to out-of-bounds read. Local access is required to approach this attack. 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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

4.8/10

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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 Probability

0.22%

12.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Assimp	Assimp	< 5.4.3

References

https://github.com/assimp/assimp/issues/6128Issue Tracking
https://github.com/assimp/assimp/issues/6175Exploit, Issue Tracking
https://github.com/user-attachments/files/20209469/reproducer.zipExploit
https://vuldb.com/?ctiid.310292Permissions Required, Third Party Advisory, VDB Entry
https://vuldb.com/?id.310292Third Party Advisory, VDB Entry
https://vuldb.com/?submit.578012Third Party Advisory, VDB Entry
https://github.com/assimp/assimp/issues/6175Exploit, Issue Tracking

Timeline

Published: May 26, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-5203?

How severe is CVE-2025-5203?

CVE-2025-5203 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2025-5203?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-5203?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST