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CVE-2025-2750

Open Asset Import Library Assimp CSM File CSMLoader.cpp InternReadFile out-of-bounds write

5.3 MediumFix available

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

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
Low
Integrity
Low
Availability
Low

Exploit likelihood

0.48%Up 0.4 points since Mar 25, 2025
90%50%10%1%

What each source reports

CVE List Score used 5.3

Open Asset Import Library Assimp CSM File CSMLoader.cpp InternReadFile out-of-bounds write

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Record
CVE-2025-2750
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS 3.0
6.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS 2.0
7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-787, CWE-119
Updated
2026-11-02
EUVDEUVD-2025-8069 5.3

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Record
EUVD-2025-8069
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-6x45-4j6r-r8x8 5.3

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp...

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Record
GHSA-6x45-4j6r-r8x8
CVSS 4.0
5.3 MediumCVSS: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: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
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Weakness
CWE-119
Updated
2026-11-02
NVD 5.3

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Record
CVE-2025-2750
CVSS 4.0
5.3 MediumCVSS: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: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
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-119, CWE-787
Updated
2026-11-02
OSV 5.3

Open Asset Import Library Assimp CSM File CSMLoader.cpp InternReadFile out-of-bounds write

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Record
CVE-2025-2750
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Weakness
CWE-119, CWE-787
Updated
2026-11-02
OSVDEBIAN-CVE-2025-2750 8.8

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Record
DEBIAN-CVE-2025-2750
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 9 moreShow less
OSVOESA-2026-2455 6.3

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 vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2750)

Record
OESA-2026-2455
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVOESA-2026-2456 6.3

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 vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2750)

Record
OESA-2026-2456
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVOESA-2026-2457 6.3

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 vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2750)

Record
OESA-2026-2457
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVOESA-2026-2521 6.3

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 vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2750)

Record
OESA-2026-2521
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVOESA-2026-2645 6.3

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 vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2750)

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function Assimp::MDLImporter::ParseTextureColorData of the file code/AssetLib/MDL/MDLMaterialLoader.cpp of the component MDL File Handler. The manipulation of the argument mWidth/mHeight leads to resource consumption. The attack can be initiated remotely. Upgrading to version 6.0 is able to address this issue. The name of the patch is 5d2a7482312db2e866439a8c05a07ce1e718bed1. It is recommended to apply a patch to fix this issue.(CVE-2025-3016)

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::ASE::Parser::ParseLV4MeshBonesVertices of the file code/AssetLib/ASE/ASEParser.cpp of the component ASE File Handler. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The identifier of the patch is e8a6286542924e628e02749c4f5ac4f91fdae71b. It is recommended to apply a patch to fix this issue.(CVE-2025-3159)

A vulnerability has been found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This vulnerability affects the function Assimp::SceneCombiner::AddNodeHashes of the file code/Common/SceneCombiner.cpp of the component File Handler. The manipulation leads to out-of-bounds read. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as a0993658f40d8e13ff5823990c30b43c82a5daf0. It is recommended to apply a patch to fix this issue.(CVE-2025-3160)

Record
OESA-2026-2645
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVPYSEC-2025-161 8.8

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Record
PYSEC-2025-161
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2025-2750 5.3

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Record
UBUNTU-CVE-2025-2750
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVMGASA-2026-0170 No score

Updated assimp packages fix security vulnerabilities

CVE-2025-2750,- A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation leads to out-of-bounds write. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. CVE-2025-2757, A vulnerability classified as critical was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function AI_MD5_PARSE_STRING_IN_QUOTATION of the file code/AssetLib/MD5/MD5Parser.cpp of the component MD5 File Handler. The manipulation of the argument data leads to heap-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. CVE-2025-2757, A vulnerability classified as critical was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function AI_MD5_PARSE_STRING_IN_QUOTATION of the file code/AssetLib/MD5/MD5Parser.cpp of the component MD5 File Handler. The manipulation of the argument data leads to heap-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. CVE-2025-3158, A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3. Affected by this issue is the function Assimp::LWO::AnimResolver::UpdateAnimRangeSetup of the file code/AssetLib/LWO/LWOAnimation.cpp of the component LWO File Handler. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. CVE-2025-3548, A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp up to 5.4.3. This issue affects the function aiString::Set in the library include/assimp/types.h of the component File Handler. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue. CVE-2025-11277, 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 a 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 used for attacks. CVE-2025-70067, Buffer Overflow vulnerability exists in Assimp versions up to 6.0.2 in the FBX Importer. The vulnerability occurs in aiMaterial::AddBinaryProperty, where a property key string from a crafted FBX file is copied into a fixed-size heap buffer using strcpy() without runtime length validation

Record
MGASA-2026-0170
Updated
2026-11-02
OSVopenSUSE-SU-2025:15209-1 No score

assimp-devel-6.0.2-1.1 on GA media

These are all security issues fixed in the assimp-devel-6.0.2-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:15209-1
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
Mageia:9
From an advisory covering 7 CVEs
 before 5.2.5-1.mga9
5.2.5-1.mga9
assimp
openEuler:24.03-LTS-SP3
 before 5.3.1-18.oe2403sp3
5.3.1-18.oe2403sp3
assimp
openEuler:22.03-LTS-SP4
 before 5.2.4-16.oe2203sp4
5.2.4-16.oe2203sp4
assimp
openEuler:24.03-LTS
 before 5.3.1-18.oe2403
5.3.1-18.oe2403
assimp
openEuler:24.03-LTS-SP1
 before 5.3.1-18.oe2403sp1
5.3.1-18.oe2403sp1
assimp
openEuler:20.03-LTS-SP4
From an advisory covering 4 CVEs
 before 3.3.1-37.oe2003sp4
3.3.1-37.oe2003sp4
pyassimp
PyPI
 through 5.4.3, plus listed versions
0.13.34.1.14.1.24.1.34.1.45.2.5
 None known
Show 9 moreShow less
Affected packages
PackageAffectedFixed
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: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
openSUSE:Tumbleweed
From an advisory covering 5 CVEs
 before 6.0.2-1.1
6.0.2-1.1

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-2025-2750 is a medium vulnerability (CVSS 5.3) in Assimp, published March 25, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.48%, the 41st percentile. Fixed in assimp 6.0.2+ds-1.

References

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