CVE-2025-3548: Open Asset Import Library Assimp File types.h… (CVSS 4.8)

OSVJLSEC-2026-190 1.9

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.

Record: JLSEC-2026-190
CVSS 4.0: 1.9 LowCVSS: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/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 2.0: 4.3 MediumAV:L/AC:L/Au:S/C:P/I:P/A:P
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVOESA-2026-1328 3.3

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, 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-2025-3548)

Record: OESA-2026-1328
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVOESA-2026-1329 3.3

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, 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-2025-3548)

Record: OESA-2026-1329
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVOESA-2026-1330 7.8

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 vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been declared as critical. Affected by this vulnerability is the function Assimp::AC3DImporter::ConvertObjectSection of the file code/AssetLib/AC/ACLoader.cpp of the component AC3D File Handler. The manipulation of the argument it leads to heap-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2754)

A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::AC3DImporter::ConvertObjectSection of the file code/AssetLib/AC/ACLoader.cpp of the component AC3D File Handler. The manipulation of the argument tmp leads to heap-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2756)

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-2025-3548)

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. Affected is the function Assimp::MD3Importer::ValidateSurfaceHeaderOffsets of the file code/AssetLib/MD3/MD3Loader.cpp of the component 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.(CVE-2025-3549)

A vulnerability was found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This issue affects the function MDCImporter::ValidateSurfaceHeader of the file assimp/code/AssetLib/MDC/MDCLoader.cpp. The manipulation of the argument pcSurface2 leads to out-of-bounds read. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.(CVE-2025-5165)

A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been rated as problematic. Affected by this issue is the function MDLImporter::ImportUVCoordinate_3DGS_MDL345 of the file assimp/code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument iIndex 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 project decided to collect all Fuzzer bugs in a main-issue to address them in the future.(CVE-2025-5168)

A vulnerability was found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This issue affects the function MDLImporter::InternReadFile_Quake1 of the file assimp/code/AssetLib/MDL/MDLLoader.cpp. The manipulation leads to out-of-bounds read. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.(CVE-2025-5200)

Record: OESA-2026-1330
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVOESA-2026-1331 7.8

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 vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been declared as critical. Affected by this vulnerability is the function Assimp::AC3DImporter::ConvertObjectSection of the file code/AssetLib/AC/ACLoader.cpp of the component AC3D File Handler. The manipulation of the argument it leads to heap-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2754)

A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::AC3DImporter::ConvertObjectSection of the file code/AssetLib/AC/ACLoader.cpp of the component AC3D File Handler. The manipulation of the argument tmp leads to heap-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2756)

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-2025-3548)

A vulnerability was found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This issue affects the function MDLImporter::InternReadFile_Quake1 of the file assimp/code/AssetLib/MDL/MDLLoader.cpp. The manipulation leads to out-of-bounds read. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.(CVE-2025-5200)

Record: OESA-2026-1331
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVOESA-2026-1384 7.8

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 vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been declared as critical. Affected by this vulnerability is the function Assimp::AC3DImporter::ConvertObjectSection of the file code/AssetLib/AC/ACLoader.cpp of the component AC3D File Handler. The manipulation of the argument it leads to heap-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2754)

A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::AC3DImporter::ConvertObjectSection of the file code/AssetLib/AC/ACLoader.cpp of the component AC3D File Handler. The manipulation of the argument tmp leads to heap-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.(CVE-2025-2756)

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-2025-3548)

A vulnerability was found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This issue affects the function MDLImporter::InternReadFile_Quake1 of the file assimp/code/AssetLib/MDL/MDLLoader.cpp. The manipulation leads to out-of-bounds read. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.(CVE-2025-5200)

Record: OESA-2026-1384
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVOESA-2026-1385 5.5

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, 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-2025-3548)

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. Affected is the function Assimp::MD3Importer::ValidateSurfaceHeaderOffsets of the file code/AssetLib/MD3/MD3Loader.cpp of the component 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.(CVE-2025-3549)

A vulnerability was found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This issue affects the function MDCImporter::ValidateSurfaceHeader of the file assimp/code/AssetLib/MDC/MDCLoader.cpp. The manipulation of the argument pcSurface2 leads to out-of-bounds read. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.(CVE-2025-5165)

A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been classified as problematic. Affected is the function MDCImporter::InternReadFile of the file assimp/code/AssetLib/MDC/MDCLoader.cpp of the component MDC File Parser. The manipulation of the argument pcVerts leads to out-of-bounds read. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.(CVE-2025-5166)

A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been rated as problematic. Affected by this issue is the function MDLImporter::ImportUVCoordinate_3DGS_MDL345 of the file assimp/code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument iIndex 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 project decided to collect all Fuzzer bugs in a main-issue to address them in the future.(CVE-2025-5168)

Record: OESA-2026-1385
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2025-3548 1.9

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.

Record: UBUNTU-CVE-2025-3548
CVSS 4.0: 1.9 LowCVSS: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
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/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

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

Package	Affected	Fixed
`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_jll` Julia	before 6.0.4+0	6.0.4+0
`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 5.3.1-16.oe2403sp3	5.3.1-16.oe2403sp3
`assimp` openEuler:20.03-LTS-SP4	before 3.3.1-26.oe2003sp4	3.3.1-26.oe2003sp4
`assimp` openEuler:24.03-LTS From an advisory covering 7 CVEs	before 5.3.1-16.oe2403	5.3.1-16.oe2403
`assimp` openEuler:24.03-LTS-SP1 From an advisory covering 4 CVEs	before 5.3.1-16.oe2403sp1	5.3.1-16.oe2403sp1
`assimp` openEuler:24.03-LTS-SP2 From an advisory covering 4 CVEs	before 5.3.1-16.oe2403sp2	5.3.1-16.oe2403sp2

Package	Affected	Fixed
`assimp` openEuler:22.03-LTS-SP4 From an advisory covering 5 CVEs	before 5.2.4-12.oe2203sp4	5.2.4-12.oe2203sp4
`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

Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

CVE-2025-3548

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

Affected packages

History

In short

References