A heap-buffer-overflow vulnerability was discovered in the SkipSpacesAndLineEnd function in Assimp v5.4.3.

published 2024-11-21 23 mo ago modified 2026-06-17 4 mo ago also PYSEC-2024-295 , EUVD-2024-51963

cvss: 6.2; 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 23%
public exploits: 0; none known

A heap-buffer-overflow vulnerability was discovered in the SkipSpacesAndLineEnd function in Assimp v5.4.3. This issue occurs when processing certain malformed MD5 model files, leading to an out-of-bounds read and potential application crash.

Patch / fix

distros 2

debian opensuse

assimp Debian 14 6.0.2+ds-1

debian advisories DEBIAN-CVE-2024-53425

assimp Package Hub 15 SP6, openSUSE Leap 15.6 5.3.1-bp156.3.9.1
assimp openSUSE Tumbleweed 5.4.3-3.1

opensuse advisories openSUSE-SU-2025:0113-1 openSUSE-SU-2024:14610-1

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-2024-53425 updated 2026-11-07 cvss 6.2

assimp: heap-based buffer overflow in SkipSpacesAndLineEnd

Red Hat Enterprise Linux 9 qt5-qt3d, qt5-qt3d-examples
not affected: vulnerable code not present

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: 23 mo ago (2024-11-26)

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/assimp/assimp/issues/5860 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.2	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	6.2	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV	3.1	6.2	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

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

Affected products

assimp assimp

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input

References

github.com /assimp/assimp/issues/5860
exploit, issue-tracking, third-party-advisory, report

Sources

Fencer Vulns 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.

Summary