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CVE-2025-2591

Open Asset Import Library Assimp MDLLoader.cpp InternReadFile_Quake1 divide by zero

5.3 MediumFix available

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

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
None
Availability
Low

Exploit likelihood

0.65%Up 0.6 points since Mar 22, 2025
90%50%10%1%

What each source reports

CVE List Score used 5.3

Open Asset Import Library Assimp MDLLoader.cpp InternReadFile_Quake1 divide by zero

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Record
CVE-2025-2591
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS 3.0
4.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS 2.0
5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-369, CWE-404
Updated
2026-11-02
EUVDEUVD-2025-7251 5.3

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Record
EUVD-2025-7251
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-6q3p-m444-94qp 5.3

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3....

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Record
GHSA-6q3p-m444-94qp
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weakness
CWE-369
Updated
2026-11-02
NVD 5.3

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Record
CVE-2025-2591
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-369, CWE-404
Updated
2026-11-02
OSV 5.3

Open Asset Import Library Assimp MDLLoader.cpp InternReadFile_Quake1 divide by zero

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Record
CVE-2025-2591
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness
CWE-369, CWE-404
Updated
2026-11-02
OSVDEBIAN-CVE-2025-2591 5.5

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Record
DEBIAN-CVE-2025-2591
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 10 moreShow less
OSVOESA-2026-1079 9.8

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 weakness has been identified in Open Asset Import Library Assimp 6.0.2. This affects the function Q3DImporter::InternReadFile of the file assimp/code/AssetLib/Q3D/Q3DLoader.cpp. Executing manipulation can lead to heap-based buffer overflow. The attack needs to be launched locally. The exploit has been made available to the public and could be exploited.(CVE-2025-11277)

A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3. This issue affects the function Assimp::BaseImporter::ConvertToUTF8 of the file BaseImporter.cpp of the component File Handler. The manipulation leads to heap-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2152)

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.(CVE-2025-2591)

Record
OESA-2026-1079
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-1080 9.8

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 weakness has been identified in Open Asset Import Library Assimp 6.0.2. This affects the function Q3DImporter::InternReadFile of the file assimp/code/AssetLib/Q3D/Q3DLoader.cpp. Executing manipulation can lead to heap-based buffer overflow. The attack needs to be launched locally. The exploit has been made available to the public and could be exploited.(CVE-2025-11277)

A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3. This issue affects the function Assimp::BaseImporter::ConvertToUTF8 of the file BaseImporter.cpp of the component File Handler. The manipulation leads to heap-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2152)

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.(CVE-2025-2591)

Record
OESA-2026-1080
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-1083 9.8

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 weakness has been identified in Open Asset Import Library Assimp 6.0.2. This affects the function Q3DImporter::InternReadFile of the file assimp/code/AssetLib/Q3D/Q3DLoader.cpp. Executing manipulation can lead to heap-based buffer overflow. The attack needs to be launched locally. The exploit has been made available to the public and could be exploited.(CVE-2025-11277)

A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3. This issue affects the function Assimp::BaseImporter::ConvertToUTF8 of the file BaseImporter.cpp of the component File Handler. The manipulation leads to heap-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2152)

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.(CVE-2025-2591)

Record
OESA-2026-1083
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2026-1084 9.8

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 weakness has been identified in Open Asset Import Library Assimp 6.0.2. This affects the function Q3DImporter::InternReadFile of the file assimp/code/AssetLib/Q3D/Q3DLoader.cpp. Executing manipulation can lead to heap-based buffer overflow. The attack needs to be launched locally. The exploit has been made available to the public and could be exploited.(CVE-2025-11277)

A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3. This issue affects the function Assimp::BaseImporter::ConvertToUTF8 of the file BaseImporter.cpp of the component File Handler. The manipulation leads to heap-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2152)

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.(CVE-2025-2591)

Record
OESA-2026-1084
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVPYSEC-2025-160 5.5

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Record
PYSEC-2025-160
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2025-2591 5.3

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Record
UBUNTU-CVE-2025-2591
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSVopenSUSE-SU-2025:0113-1 No score

Security update for assimp

This update for assimp fixes the following issues:

  • CVE-2024-48425: Fixed SEGV in Assimp:SplitLargeMeshesProcess_Triangle:UpdateNode (boo#1232324)
  • CVE-2024-48423: Fixed a arbitrary code execution via CallbackToLogRedirector() (boo#1232322)
  • CVE-2024-48424: Fixed a heap-buffer-overflow in OpenDDLParser:parseStructure() (boo#1232323)
  • CVE-2024-53425: Fixed a heap-based buffer overflow in SkipSpacesAndLineEnd() (boo#1233633)
  • CVE-2025-2592: Fixed a heap-based buffer overflow in Assimp::CSMImporter::InternReadFile() (boo#1239916)
  • CVE-2025-3015: Fixed out-of-bounds read caused by manipulation of the argument mIndices (boo#1240412)
  • CVE-2025-3016: Fixed a denial of service caused by manipulation of the argument mWidth/mHeight (boo#1240413)
  • CVE-2025-2591: Fixed a denial of service in code/AssetLib/MDL/MDLLoader.cpp (boo#1239920)
  • CVE-2025-2151: Fixed a stack-based buffer overflow in Assimp::GetNextLine() (boo#1239220)
Record
openSUSE-SU-2025:0113-1
Updated
2026-11-02
OSVopenSUSE-SU-2025:14950-1 No score

assimp-devel-5.4.3-5.1 on GA media

These are all security issues fixed in the assimp-devel-5.4.3-5.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:14950-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:20781-1 No score

Security update for assimp

This update for assimp fixes the following issues

  • CVE-2025-2151: vulnerability affects the function Assimp: GetNextLine in the library ParsingUtils.h (bsc#1239220).
  • CVE-2025-2591: division by zero in code/AssetLib/MDL/MDLLoader.cpp (bsc#1239920).
  • CVE-2025-2592: heap-based buffer overflow in Assimp: CSMImporter: InternReadFile of code/AssetLib/CSM/CSMLoader.cpp (bsc#1239916).
  • CVE-2025-3015: manipulation of the argument mIndices leads to out-of-bounds read (bsc#1240412).
  • CVE-2025-3548: processing of malformed files may leads to an out-of-bounds read and potential application crash (bsc#1241367).
Record
openSUSE-SU-2026:20781-1
Updated
2026-11-02
OSVSUSE-SU-2026:21821-1 No score

Security update for assimp

This update for assimp fixes the following issues

  • CVE-2025-2151: vulnerability affects the function Assimp: GetNextLine in the library ParsingUtils.h (bsc#1239220).
  • CVE-2025-2591: division by zero in code/AssetLib/MDL/MDLLoader.cpp (bsc#1239920).
  • CVE-2025-2592: heap-based buffer overflow in Assimp: CSMImporter: InternReadFile of code/AssetLib/CSM/CSMLoader.cpp (bsc#1239916).
  • CVE-2025-3015: manipulation of the argument mIndices leads to out-of-bounds read (bsc#1240412).
  • CVE-2025-3548: processing of malformed files may leads to an out-of-bounds read and potential application crash (bsc#1241367).
Record
SUSE-SU-2026:21821-1
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
 before 6.0.2+ds-1, plus listed versions
5.4.3+ds-25.4.3+ds-3
6.0.2+ds-1
assimp
openEuler:24.03-LTS-SP2
From an advisory covering 3 CVEs
 before 5.3.1-11.oe2403sp2
5.3.1-11.oe2403sp2
assimp
openEuler:24.03-LTS-SP3
From an advisory covering 3 CVEs
 before 5.3.1-11.oe2403sp3
5.3.1-11.oe2403sp3
assimp
openEuler:24.03-LTS
From an advisory covering 3 CVEs
 before 5.3.1-11.oe2403
5.3.1-11.oe2403
assimp
openEuler:24.03-LTS-SP1
From an advisory covering 3 CVEs
 before 5.3.1-11.oe2403sp1
5.3.1-11.oe2403sp1
pyassimp
PyPI
 through 5.4.3, plus listed versions
0.13.34.1.14.1.24.1.34.1.45.2.5
 None known
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
Show 9 moreShow less
Affected packages
PackageAffectedFixed
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:25.10
 All versions, plus listed versions
5.4.3+ds-2
 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
assimp
SUSE:Package Hub 15 SP6
From an advisory covering 9 CVEs
 before 5.3.1-bp156.3.9.1
5.3.1-bp156.3.9.1
assimp
openSUSE:Leap 15.6
From an advisory covering 9 CVEs
 before 5.3.1-bp156.3.9.1
5.3.1-bp156.3.9.1
assimp
openSUSE:Tumbleweed
From an advisory covering 4 CVEs
 before 5.4.3-5.1
5.4.3-5.1

History

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

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

In short

CVE-2025-2591 is a medium vulnerability (CVSS 5.3) in Assimp, published March 21, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.65%, the 51st percentile. Fixed in assimp 6.0.2+ds-1.

References

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