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Fencer Intel
medium 5.3

CVE-2025-3158 json

Open Asset Import Library Assimp LWO File LWOAnimation.cpp UpdateAnimRangeSetup heap-based overflow

published last yr. modified 4mo ago also PYSEC-2025-169 , EUVD-2025-9637

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 26%
public exploits
0
none known

Summary

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.

Patch / fix

  • assimp Debian 14 6.0.2+ds-1

debian advisories DEBIAN-CVE-2025-3158

  • 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 6.0.2-1.1

opensuse advisories openSUSE-SU-2025:15209-1

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

rocky linux advisories RLSA-2025:12842

Is CVE-2025-3158 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-2025-3158 updated cvss 5.3

assimp: Open Asset Import Library Assimp LWO File LWOAnimation.cpp UpdateAnimRangeSetup 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

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/assimp/assimp/issues/6023#issue-2877381000 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/assimp/assimp/issues/6023 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.