CVE-2026-19999Public exploitNetwork attack vector

Process crash via unchecked MDL7 transform count

Published Aug 17, 2026 · Updated Aug 19, 2026

Out-of-bounds read in the MDL7 parser in Open Asset Import Library Assimp 17c12da allows attackers to crash a process via a crafted file. In MDLLoader.cpp, ParseBoneTrafoKeys_3DGS_MDL7 iterates on the untrusted transmatrix_count field and advances pcBoneTransforms without first validating that the full bone-transform span remains inside the frame buffer. Reachability depends on an application importing attacker-supplied MDL7 content; the public PoC demonstrates a sanitizer-detected heap over-read and crash, not published code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds read in the MDL7 parser in Open Asset Import Library Assimp 17c12da allows attackers to crash a process via a crafted file. In MDLLoader.cpp, ParseBoneTrafoKeys_3DGS_MDL7 iterates on the untrusted transmatrix_count field and advances pcBoneTransforms without first validating that the full bone-transform span remains inside the frame buffer. Reachability depends on an application importing attacker-supplied MDL7 content; the public PoC demonstrates a sanitizer-detected heap over-read and crash, not published code execution.

The record

CVE
CVE-2026-19999
Published
Aug 17, 2026
Updated
Aug 19, 2026
Vendor
Open Asset Import Library
Product
Assimp
Classifications
CWE-120, CWE-119
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=17c12da

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open Asset Import Library · Assimpversion=17c12da

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
6.3VulDBCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
5.3VulDBCVSS: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:P

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic 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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo