CVE catalog

CVE-2025-6120

assimp: CVE-2025-6120

Severity: Medium · CVSS 5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Published: Jun 16, 2025, 11:31:06 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.27% · Oct 25, 2026

A vulnerability classified as critical was found in Open Asset Import Library Assimp up to 5.4.3. Affected by this vulnerability is the function read_meshes in the library assimp/code/AssetLib/MDL/HalfLife/HL1MDLLoader.cpp. 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. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	assimp	sid	`6.0.5+ds-1`	vulnerable
Debian	assimp	forky	`6.0.5+ds-1`	vulnerable
Debian	assimp	trixie	`5.4.3+ds-2`	vulnerable
Debian	assimp	bookworm	`5.2.5~ds0-1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	assimp	source	sid	`(unfixed)`	not yet assigned	Not reported	[1107936]
Debian	assimp	source	forky	`(unfixed)`	not yet assigned	Not reported	[1107936]
Debian	assimp	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1107936]
Debian	assimp	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1107936]

[Debian bug #1107936]

Notes

[trixie] assimp: Minor issue, revisit when/if fixed upstream [bookworm] assimp: Minor issue, revisit when/if fixed upstream

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[assimp-testmodels]Affected
Source package: [assimp]
Details (2)
- 5.2.5~ds0-1 · all · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
- 5.2.5~ds0-1 · all · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
[assimp-utils]Affected
Source package: [assimp]
Details (2)
- 5.2.5~ds0-1+b1 · amd64 · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
- 5.2.5~ds0-1+b1 · arm64 · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
[libassimp5]Affected
Source package: [assimp]
Details (2)
- 5.2.5~ds0-1+b1 · amd64 · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
- 5.2.5~ds0-1+b1 · arm64 · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
[libassimp-dev]Affected
Source package: [assimp]
Details (2)
- 5.2.5~ds0-1+b1 · amd64 · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
- 5.2.5~ds0-1+b1 · arm64 · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
[libassimp-doc]Affected
Source package: [assimp]
Details (2)
- 5.2.5~ds0-1 · all · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
- 5.2.5~ds0-1 · all · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
[python3-pyassimp]Affected
Source package: [assimp]
Details (2)
- 5.2.5~ds0-1 · all · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12
- 5.2.5~ds0-1 · all · bookworm
  Affected
  dsa · assimp · debian · bookworm; dsa · assimp · debian · 12

[Debian 13 (Trixie)]

[assimp-testmodels]Affected
Source package: [assimp]
Details (2)
- 5.4.3+ds-2 · all · trixie
  Affected
  dsa · assimp · debian · 13
- 5.4.3+ds-2 · all · trixie
  Affected
  dsa · assimp · debian · 13
[assimp-utils]Affected
Source package: [assimp]
Details (2)
- 5.4.3+ds-2 · amd64 · trixie
  Affected
  dsa · assimp · debian · 13
- 5.4.3+ds-2 · arm64 · trixie
  Affected
  dsa · assimp · debian · 13
[libassimp5]Affected
Source package: [assimp]
Details (2)
- 5.4.3+ds-2 · amd64 · trixie
  Affected
  dsa · assimp · debian · 13
- 5.4.3+ds-2 · arm64 · trixie
  Affected
  dsa · assimp · debian · 13
[libassimp-dev]Affected
Source package: [assimp]
Details (2)
- 5.4.3+ds-2 · amd64 · trixie
  Affected
  dsa · assimp · debian · 13
- 5.4.3+ds-2 · arm64 · trixie
  Affected
  dsa · assimp · debian · 13
[libassimp-doc]Affected
Source package: [assimp]
Details (2)
- 5.4.3+ds-2 · all · trixie
  Affected
  dsa · assimp · debian · 13
- 5.4.3+ds-2 · all · trixie
  Affected
  dsa · assimp · debian · 13
[python3-pyassimp]Affected
Source package: [assimp]
Details (2)
- 5.4.3+ds-2 · all · trixie
  Affected
  dsa · assimp · debian · 13
- 5.4.3+ds-2 · all · trixie
  Affected
  dsa · assimp · debian · 13

Observed: Oct 24, 2026, 9:52:42 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]