CVE-2025-11275 is a heap-based buffer overflow vulnerability identified in version 6.0.2 of the Open Asset Import Library (Assimp), specifically within the function ODDLParser::getNextSeparator located in the header file openddlparser/OpenDDLParserUtils.h. Assimp is a widely used open-source library designed to import and process various 3D model formats, facilitating interoperability between different graphics and game development tools. The vulnerability arises due to improper handling of input data in the parsing routine, which can lead to a heap buffer overflow when processing maliciously crafted OpenDDL data. This overflow can corrupt adjacent memory on the heap, potentially allowing an attacker to execute arbitrary code, cause application crashes, or manipulate program behavior. Exploitation requires local access with at least low privileges (PR:L), and no user interaction is necessary. The attack vector is local, meaning the attacker must have the ability to run code or supply input on the affected system. The CVSS 4.0 base score is 4.8 (medium severity), reflecting limited exploitability and impact scope. The vulnerability does not require elevated privileges for exploitation but does require local access, which limits remote exploitation. No patches or fixes are currently linked, and while a public exploit exists, there are no known widespread attacks in the wild. The vulnerability primarily affects software products and applications that embed or utilize Assimp 6.0.2 for 3D asset importing and processing, which may include game engines, 3D modeling tools, and visualization software.

For European organizations, the impact of CVE-2025-11275 depends on their use of Assimp 6.0.2 within their software stack. Organizations involved in game development, 3D modeling, CAD, virtual reality, or simulation software that incorporate Assimp could be at risk. Successful exploitation could lead to local privilege escalation or arbitrary code execution, potentially allowing attackers to compromise sensitive intellectual property, disrupt development environments, or pivot to further internal network attacks. While the vulnerability requires local access, insider threats or compromised user accounts could leverage this flaw to escalate privileges or destabilize critical design and visualization tools. This could impact sectors such as automotive design, aerospace, manufacturing, and entertainment industries prevalent in Europe. Additionally, compromised systems might be used as footholds for lateral movement within corporate networks. However, the medium severity and local attack vector reduce the likelihood of widespread impact. Organizations relying on third-party software that embeds Assimp should verify their supply chain and ensure no vulnerable versions are in use.

1. Immediate verification of Assimp library versions in all software products and development environments is essential. Identify any usage of version 6.0.2 and plan for upgrade or patching as soon as a fix becomes available. 2. Employ strict access controls and monitoring on systems where Assimp is used to limit local user privileges and detect anomalous behavior indicative of exploitation attempts. 3. Use application whitelisting and sandboxing techniques for software that processes untrusted 3D assets to contain potential exploitation. 4. Implement rigorous input validation and sanitization in any custom code that interfaces with Assimp or processes OpenDDL data to reduce malformed input risks. 5. Maintain up-to-date endpoint protection and intrusion detection systems capable of identifying heap overflow exploitation patterns. 6. Engage with software vendors or open-source maintainers to obtain patches or mitigations promptly. 7. Conduct security awareness training for developers and system administrators about the risks of local vulnerabilities and the importance of least privilege principles. 8. For organizations distributing software embedding Assimp, perform thorough security testing and consider recompiling with updated library versions once patched.