Cyber Resilience

CVE-2025-3548

Memory Safety in Assimp ≤ 5.4.3

Public PoCMemory Safety
Published
14 April 2025
Modified
29 April 2026
Patch / advisory
CVSS Score v4 1.9
Click a component to see what it means
Raw vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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 Score 0.0026 18th percentile
Risk Priority 15 floored blend · peak EPSS

Summary

CVE-2025-3548 is a low-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Assimp Assimp. Its CVSS base score is 1.9 (Low).

Operationally, ranked at the 18th 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.

EU & UK References

Vulnerability Data

A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp up to 5.4.3. This issue affects the function aiString::Set in the library include/assimp/types.h of the component File Handler. The manipulation leads to heap-based buffer…

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overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue.

CWE(s)

Related Threats

CVEs Like This One

CVE-2025-11275Same product: Assimp Assimp
CVE-2025-2592Same product: Assimp Assimp
CVE-2025-6120Same product: Assimp Assimp
CVE-2025-3549Same product: Assimp Assimp
CVE-2025-3158Same product: Assimp Assimp
CVE-2025-2754Same product: Assimp Assimp
CVE-2025-3159Same product: Assimp Assimp
CVE-2025-2756Same product: Assimp Assimp
CVE-2025-2757Same product: Assimp Assimp
CVE-2025-11277Same product: Assimp Assimp

Affected Assets

assimp
assimp
≤ 5.4.3

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • SI-2 Flaw Remediation
  • SI-16 Memory Protection
  • SI-10 Information Input Validation
Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)

Validate
Prove the fix (OWASP ASVS)
  • V17.3.2
  • V1.4.1

Mitigating Controls (NIST 800-53 r5) AI

prevent

Directly requires applying the recommended patch to eliminate the heap buffer overflow in aiString::Set before the vulnerable Assimp library is used.

prevent

Enforces memory-protection mechanisms (e.g., ASLR, non-executable stacks) that block reliable exploitation of the CWE-122 heap overflow on the local host.

prevent

Requires validation of untrusted file inputs processed by the Assimp File Handler, reducing the likelihood that malformed data reaches the vulnerable aiString::Set function.

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.

PR.PS-06 full match
prevents

Secure-development practices directly require bounds checking and safe memory handling that prevent heap overflows.

ID.RA-01 partial match
prevents

Vulnerability scanning and code analysis directly surface buffer-boundary flaws.

ID.RA-08 partial match
prevents

Receiving and triaging vulnerability disclosures commonly includes buffer-related reports.

PR.AT-02 partial match
prevents

Developer training on secure coding reduces introduction of memory-buffer errors.

PR.PS-02 partial match
prevents

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.

detects

Security testing in development catches out-of-bounds accesses before release, covering most instances of the weakness.

prevents

Secure development lifecycle mandates memory-safety practices that directly prevent buffer-boundary violations.

prevents

Application security requirements can specify memory-safety rules, but do not prescribe implementation details.

prevents

Secure architecture and engineering principles include memory-safe design patterns that mitigate buffer overflows.

prevents

Secure coding standards explicitly forbid unsafe buffer operations, directly eliminating CWE-119.

none

Change management ensures controlled deployment of fixes for discovered heap-overflow vulnerabilities.

References