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CVE-2025-5166

18
FAUCET Score

CVE-2025-5166 is a problematic out-of-bounds read vulnerability in Open Asset Import Library (Assimp) version 5.4.3, specifically within the MDC File Parser component. This local vulnerability, triggered by manipulating the 'pcVerts' argument in the MDCImporter::InternReadFile function, could lead to a denial of service. With a CVSS score of 5.5 (Medium), it requires local access and has low attack complexity, but its impact is limited to availability. While the exploit has been publicly disclosed, there is currently no evidence of active exploitation, nor are there Metasploit or Nuclei modules available, and it has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
5.4.3CPE matchmatch criteria
cpe:2.3:a:assimp:assimp:5.4.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

4.8MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
12.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 55th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2025-5166Low

assimp: Assimp MDC File Parser Out-of-Bounds Read

May 26, 2025

References

github.com / assimp/assimp/issues/6128
Issue Tracking
github.com / assimp/assimp/issues/6168
Exploit
github.com / user-attachments/files/20208318/reproducer.zip
Exploit
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry