CVE-2025-2754
Memory Safety in Assimp 5.4.3
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/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:XSummary
CVE-2025-2754 is a medium-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Assimp Assimp. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 40th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to SI-16 (Memory Protection) and SI-2 (Flaw Remediation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-2754 is a heap-based buffer overflow vulnerability in the Open Asset Import Library (Assimp) version 5.4.3. The flaw affects the Assimp::AC3DImporter::ConvertObjectSection function in the file code/AssetLib/AC/ACLoader.cpp, which is part of the AC3D File Handler component. Manipulation of the argument "it" triggers the overflow, as documented in the CVE description published on 2025-03-25.
The vulnerability enables remote exploitation with no privileges required (PR:N), low attack complexity (AC:L), and network accessibility (AV:N), but it requires user interaction (UI:R). Exploitation can lead to limited impacts on confidentiality, integrity, and availability (C:L/I:L/A:L), per its CVSS v3.1 base score of 6.3. It is associated with CWEs-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-122 (Heap-based Buffer Overflow).
Advisories reference GitHub issues #6015 and #6015#issue-2877373501 in the Assimp repository, along with VulDB entries (ctiid.300859, id.300859, submit.517788), where the vulnerability and exploit have been publicly disclosed. Security practitioners should monitor these sources for patch availability and mitigation recommendations.
The exploit has been disclosed to the public and may be used, increasing the risk for applications parsing untrusted AC3D files with vulnerable Assimp versions.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-8059
Vulnerability Data
A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been declared as critical. Affected by this vulnerability is the function Assimp::AC3DImporter::ConvertObjectSection of the file code/AssetLib/AC/ACLoader.cpp of the component AC3D File Handler. The manipulation of the argument…
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it leads to heap-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Heap-based buffer overflow in AC3D file parser (client-side library) directly enables exploitation for client execution when a malicious file is processed, matching T1203 due to UI:R and remote vector in asset import applications.
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
Mitigating Controls (NIST 800-53 r5) AI
Mandates timely identification, reporting, and correction of flaws, directly addressing the need to patch the heap-based buffer overflow in Assimp 5.4.3.
Implements memory protections such as ASLR and DEP that mitigate exploitation of heap buffer overflows from malformed AC3D files.
Requires validation of information inputs to restrict operations within memory bounds, reducing the risk of triggering the buffer overflow via untrusted AC3D files.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure-development practices directly require bounds checking and safe memory handling that prevent heap overflows.
Vulnerability scanning and code analysis directly surface buffer-boundary flaws.
Receiving and triaging vulnerability disclosures commonly includes buffer-related reports.
Developer training on secure coding reduces introduction of memory-buffer errors.
Patching replaces vulnerable code containing buffer-boundary defects.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing in development catches out-of-bounds accesses before release, covering most instances of the weakness.
Secure development lifecycle mandates memory-safety practices that directly prevent buffer-boundary violations.
Application security requirements can specify memory-safety rules, but do not prescribe implementation details.
Secure architecture and engineering principles include memory-safe design patterns that mitigate buffer overflows.
Secure coding standards explicitly forbid unsafe buffer operations, directly eliminating CWE-119.
Change management ensures controlled deployment of fixes for discovered heap-overflow vulnerabilities.