CVE-2025-15666Public exploit

Application crash via unchecked texture copy size

Published Jul 1, 2026 · Updated Jul 1, 2026

Heap-based buffer overflow in Assimp 5.4.0 through 5.4.3 allows local users to crash applications via a crafted model file. SceneCombiner::Copy derives a byte count from untrusted texture dimensions and passes it to memcpy without verifying the source pcData allocation. The public reproducer requires low-privileged local access and model processing; it demonstrates an out-of-bounds read and process crash, not code execution.

CVSS severity5.3
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Assimp 5.4.0 through 5.4.3 allows local users to crash applications via a crafted model file. SceneCombiner::Copy derives a byte count from untrusted texture dimensions and passes it to memcpy without verifying the source pcData allocation. The public reproducer requires low-privileged local access and model processing; it demonstrates an out-of-bounds read and process crash, not code execution.

The record

CVE
CVE-2025-15666
Published
Jul 1, 2026
Updated
Jul 1, 2026
Vendor
Open Asset Import Library
Product
Assimp
Classifications
CWE-122, CWE-119
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.4.0
  2. Affected versionversion=5.4.1
  3. Affected versionversion=5.4.2
  4. Affected versionversion=5.4.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Open Asset Import Library · Assimpversion=5.4.0; version=5.4.1; version=5.4.2; version=5.4.3

Published CVSS scores

4.3VulDBAV:L/AC:L/Au:S/C:P/I:P/A:P
1.9VulDBCVSS: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
5.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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