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Fencer Intel
medium 5.3

CVE-2025-3159 json

Open Asset Import Library Assimp ASE File ASEParser.cpp ParseLV4MeshBonesVertices heap-based overflow

published last yr. modified 3mo ago also PYSEC-2025-263 , EUVD-2025-9625

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

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.

Patch / fix

  • assimp Debian 14 6.0.2+ds-1

debian advisories DEBIAN-CVE-2025-3159

  • qt5-qt3d RHEL 9 5.15.9-2.el9_6
  • qt5-qt3d-examples RHEL 9 5.15.9-2.el9_6
  • qt5-qt3d RHEL 9.0 E4S 5.15.2-10.el9_0
  • qt5-qt3d-examples RHEL 9.0 E4S 5.15.2-10.el9_0
  • qt5-qt3d RHEL 9.4 EUS 5.15.9-2.el9_4
  • qt5-qt3d-examples RHEL 9.4 EUS 5.15.9-2.el9_4
  • qt5-qt3d RHEL 9.2 E4S 5.15.3-2.el9_2
  • qt5-qt3d-examples RHEL 9.2 E4S 5.15.3-2.el9_2

red hat advisories RHSA-2025:15463RHSA-2025:15407RHSA-2025:15347RHSA-2025:12842

  • assimp openSUSE Tumbleweed 6.0.1-1.1

opensuse advisories openSUSE-SU-2025:15198-1

  • qt5-qt3d Rocky Linux 9 5.15.9-2.el9_6

rocky linux advisories RLSA-2025:12842

Is CVE-2025-3159 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-3159 updated cvss 5.3

assimp: Open Asset Import Library Assimp ASE File ASEParser.cpp ParseLV4MeshBonesVertices heap-based overflow

  • Red Hat Enterprise Linux AppStream (v. 9) qt5-qt3d 5.15.9-2.el9_6, qt5-qt3d-examples 5.15.9-2.el9_6
    fixed: vendor fix RHSA-2025:12842
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) qt5-qt3d 5.15.2-10.el9_0, qt5-qt3d-examples 5.15.2-10.el9_0
    fixed: vendor fix RHSA-2025:15463
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) qt5-qt3d 5.15.3-2.el9_2, qt5-qt3d-examples 5.15.3-2.el9_2
    fixed: vendor fix RHSA-2025:15347
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) qt5-qt3d 5.15.9-2.el9_4, qt5-qt3d-examples 5.15.9-2.el9_4
    fixed: vendor fix RHSA-2025:15407

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/assimp/assimp/issues/6024#issue-2877382033 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/assimp/assimp/issues/6024 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 4.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CNA 3.1 5.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA 3.0 5.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA 2.0 4.3 AV:L/AC:L/Au:S/C:P/I:P/A:P
CNA 4.0 4.8 CVSS: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: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
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
OSV 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi pyassimp
<=5.4.3
 no fix listed

Affected products

  • Open Asset Import Library Assimp

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.