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CVE-2026-19969

Open Asset Import Library Assimp 3DGS MDL7 Model Output Mesh Generator MDLLoader.cpp GenerateOutputMeshes_3DGS_MDL7 buffer overflow

5.3 MediumFix available

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The impacted element is the function Assimp::MDLImporter::GenerateOutputMeshes_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Model Output Mesh Generator. The manipulation leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Passive

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
Low

Exploit likelihood

0.50%Up 0.2 points since Aug 17, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.3

Open Asset Import Library Assimp 3DGS MDL7 Model Output Mesh Generator MDLLoader.cpp GenerateOutputMeshes_3DGS_MDL7 buffer overflow

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The impacted element is the function Assimp::MDLImporter::GenerateOutputMeshes_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Model Output Mesh Generator. The manipulation leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Record
CVE-2026-19969
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
CVSS 2.0
6.4 AV:N/AC:L/Au:N/C:N/I:P/A:P/E:POC/RL:ND/RC:UR
Weakness
CWE-120, CWE-119
Updated
2026-11-02
EUVDEUVD-2026-60017 5.3

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The impacted element is the function Assimp::MDLImporter::GenerateOutputMeshes_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Model Output Mesh Generator. The manipulation leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Record
EUVD-2026-60017
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Updated
2026-11-02
GitHub AdvisoriesGHSA-39wv-72w9-m7wp 2.1

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The...

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The impacted element is the function Assimp::MDLImporter::GenerateOutputMeshes_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Model Output Mesh Generator. The manipulation leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Record
GHSA-39wv-72w9-m7wp
CVSS 4.0
2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/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
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Weakness
CWE-119
Updated
2026-11-02
NVD 2.1

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The impacted element is the function Assimp::MDLImporter::GenerateOutputMeshes_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Model Output Mesh Generator. The manipulation leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Record
CVE-2026-19969
CVSS 4.0
2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/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
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
CVSS 2.0
6.4 MediumAV:N/AC:L/Au:N/C:N/I:P/A:P
Weakness
CWE-119, CWE-120
Updated
2026-11-02
OSVDEBIAN-CVE-2026-19969 2.1

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The impacted element is the function Assimp::MDLImporter::GenerateOutputMeshes_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Model Output Mesh Generator. The manipulation leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Record
DEBIAN-CVE-2026-19969
CVSS 4.0
2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/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
Updated
2026-11-02
OSVOESA-2026-4447 2.1

assimp security update

Assimp is a library to load and process geometric scenes from various data formats. Assimp aims to provide a full asset conversion pipeline for use in game engines and real-time rendering systems of any kind, but is not limited to this purpose.

Security Fix(es):

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The impacted element is the function Assimp::MDLImporter::GenerateOutputMeshes_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Model Output Mesh Generator. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Remote exploitation of the attack is possible, impacting integrity and availability. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.(CVE-2026-19969)

Record
OESA-2026-4447
CVSS 4.0
2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/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
Updated
2026-11-02
OSVOESA-2026-4448 2.1

assimp security update

Assimp is a library to load and process geometric scenes from various data formats. Assimp aims to provide a full asset conversion pipeline for use in game engines and real-time rendering systems of any kind, but is not limited to this purpose.

Security Fix(es):

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The impacted element is the function Assimp::MDLImporter::GenerateOutputMeshes_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Model Output Mesh Generator. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Remote exploitation of the attack is possible, impacting integrity and availability. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.(CVE-2026-19969)

Record
OESA-2026-4448
CVSS 4.0
2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/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
Updated
2026-11-02
OSVOESA-2026-4449 2.1

assimp security update

Assimp is a library to load and process geometric scenes from various data formats. Assimp aims to provide a full asset conversion pipeline for use in game engines and real-time rendering systems of any kind, but is not limited to this purpose.

Security Fix(es):

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The impacted element is the function Assimp::MDLImporter::GenerateOutputMeshes_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Model Output Mesh Generator. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Remote exploitation of the attack is possible, impacting integrity and availability. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.(CVE-2026-19969)

Record
OESA-2026-4449
CVSS 4.0
2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/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
Updated
2026-11-02
OSVUBUNTU-CVE-2026-19969 2.1

A security vulnerability has been detected in Open Asset Import Library Assimp 17c12da. The impacted element is the function Assimp::MDLImporter::GenerateOutputMeshes_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Model Output Mesh Generator. The manipulation leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Record
UBUNTU-CVE-2026-19969
CVSS 4.0
2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
assimp
Debian:12
All versions, plus listed versions
5.2.5~ds0-15.2.5~ds0-1.15.3.1+ds-15.3.1+ds-25.4.0+ds-1
Show 9 moreShow less
5.4.1+ds-15.4.2+ds-15.4.3+ds-25.4.3+ds-36.0.2+ds-16.0.3+ds-16.0.4+ds-16.0.4+ds-36.0.5+ds-1
None known
assimp
Debian:13
All versions, plus listed versions
5.4.3+ds-25.4.3+ds-36.0.2+ds-16.0.3+ds-16.0.4+ds-16.0.4+ds-36.0.5+ds-1
None known
assimp
Debian:14
All versions, plus listed versions
5.4.3+ds-25.4.3+ds-36.0.2+ds-16.0.3+ds-16.0.4+ds-16.0.4+ds-36.0.5+ds-1
None known
assimp
openEuler:24.03-LTS-SP4
before 5.3.1-24.oe2403sp4
5.3.1-24.oe2403sp4
assimp
openEuler:24.03-LTS-SP1
before 5.3.1-24.oe2403sp1
5.3.1-24.oe2403sp1
assimp
openEuler:24.03-LTS-SP3
before 5.3.1-24.oe2403sp3
5.3.1-24.oe2403sp3
assimp
Ubuntu:16.04:LTS
All versions, plus listed versions
3.0~dfsg-4ubuntu43.1.1~dfsg-53.2~dfsg-13.2~dfsg-23.2~dfsg-3
None known
assimp
Ubuntu:18.04:LTS
All versions, plus listed versions
3.3.1~dfsg-53.3.1~dfsg-5ubuntu13.3.1~dfsg-5+build14.0.1~dfsg-1~exp24.0.1~dfsg-14.1.0~dfsg-14.1.0~dfsg-24.1.0~dfsg-3
None known
assimp
Ubuntu:20.04:LTS
All versions, plus listed versions
4.1.0~dfsg-54.1.0~dfsg-5ubuntu15.0.1~ds0-1build1
None known
assimp
Ubuntu:22.04:LTS
All versions, plus listed versions
5.0.1~ds0-25.0.1~ds0-3ubuntu15.1.4~ds0-15.1.5~ds0-15.1.6~ds0-15.2.0~ds0-25.2.1~ds0-15.2.2~ds0-1
None known
assimp
Ubuntu:24.04:LTS
All versions, plus listed versions
5.2.5~ds0-1.1build15.3.1+ds-15.3.1+ds-25.3.1+ds-2build1
None known
assimp
Ubuntu:26.10
All versions, plus listed versions
6.0.4+ds-1build16.0.5+ds-1
None known
assimp
Ubuntu:26.04:LTS
All versions, plus listed versions
5.4.3+ds-26.0.2+ds-16.0.3+ds-16.0.4+ds-16.0.4+ds-1build1
None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-19969 is a medium vulnerability (CVSS 5.3) in Open Asset Import Library Assimp, published August 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.50%, the 43rd percentile. Fixed in assimp 5.3.1-24.oe2403sp4.

References

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