CVE-2025-3196Public exploit

Application crash via unchecked MD2 skin name

Published Apr 4, 2025 · Updated Jul 23, 2025

Stack-based buffer overflow in Assimp 5.4.3 allows local users to crash an importing application with a malformed MD2 file. MD2Importer::InternReadFile calls strlen on the untrusted skin name and passes the unchecked length to memcpy into a fixed-size stack aiString buffer. The user must be able to supply and import the crafted file; the demonstrated consequence is an out-of-bounds write and application crash.

CVSS severity5.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Assimp 5.4.3 allows local users to crash an importing application with a malformed MD2 file. MD2Importer::InternReadFile calls strlen on the untrusted skin name and passes the unchecked length to memcpy into a fixed-size stack aiString buffer. The user must be able to supply and import the crafted file; the demonstrated consequence is an out-of-bounds write and application crash.

The record

CVE
CVE-2025-3196
Published
Apr 4, 2025
Updated
Jul 23, 2025
Vendor
Open Asset Import Library
Product
Assimp
Classifications
CWE-119, CWE-787, CWE-121
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 23, 2025Record 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=5.4.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Open Asset Import Library · Assimpversion=5.4.3

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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
4.3VulDBAV:L/AC:L/Au:S/C:P/I:P/A: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow

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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