Skip to content
Noroxi
CVE-2025-3196· NVD / CVE Program· CNA VulDB

Open Asset Import Library Assimp Malformed File MD2Loader.cpp InternReadFile stack-based overflow

Noroxi assessment

Priority: Monitor (action score 7/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.31% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: assimp (Debian:14) 6.0.2+ds-1; assimp (openSUSE:Tumbleweed) 6.0.1-1.1.
  • Severity is disputed: the assigning authority (CNA) scores it 4.8, NVD 1.9.

Low priority for now. Upgrade to assimp (Debian:14) 6.0.2+ds-1; assimp (openSUSE:Tumbleweed) 6.0.1-1.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. Affected is the function Assimp::MD2Importer::InternReadFile in the library code/AssetLib/MD2/MD2Loader.cpp of the component Malformed File Handler. The manipulation of the argument Name leads to stack-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. It is recommended to upgrade the affected component.

LowCVSS 1.9 · v4.0—No exploit Fix available
Published
Apr 3, 2025
Updated
Jun 17, 2026
EPSS
0.3% · 22th percentile

Report tools

JSON

Action score

7

Monitor

Low priority for now.

CVSS
7 / 40 · 1.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulDB
4.8
NVD has not scored this yet; the score shown is the CNA’s.

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:P

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-3196

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for assimp records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
assimpassimp

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • assimp assimp5.4.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

  • Open Asset Import Library Assimp

    • 5.4.3affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12assimpall versions—
Debian:14assimpbefore 6.0.2+ds-16.0.2+ds-1
openSUSE:Tumbleweedassimpbefore 6.0.1-1.16.0.1-1.1
PyPIpyassimpup to and including 5.4.3—

Same product

assimp: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-45748An issue was discovered with assimp 5.1.4, a use after free occurred in function ColladaParser::ExtractDataObjectFromChannel in file /code/A
    35Monitor
  • CVE-2024-45679Heap-based buffer overflow vulnerability in Assimp versions prior to 5.4.3 allows a local attacker to execute arbitrary code by importing a
    33Monitor
  • CVE-2024-48423An issue in assimp v.5.4.3 allows a local attacker to execute arbitrary code via the CallbackToLogRedirector function within the Assimp libr
    31Monitor
  • CVE-2024-40724Heap-based buffer overflow vulnerability in Assimp versions prior to 5.4.2 allows a local attacker to execute arbitrary code by inputting a
    31Monitor
  • CVE-2026-111129Assimp through 6.0.5 NULL Pointer Dereference via Ogre Animation Track
    27Monitor
  • CVE-2026-111128Assimp through 6.0.5 NULL Pointer Dereference via Ogre Importer Bone Assignment
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:assimp6.0.2+ds-1 · Debian:14Package registry (OSV)
opensuse:assimp6.0.1-1.1 · openSUSE:TumbleweedPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-30153 days apartOpen Asset Import Library Assimp ASE File ASELoader.cpp BuildUniqueRepresentation out-of-bounds
    21Monitor
  • CVE-2025-27519 days apartOpen Asset Import Library Assimp CSM File CSMLoader.cpp InternReadFile out-of-bounds
    21Monitor
  • CVE-2025-27529 days apartOpen Asset Import Library Assimp CSM File fast_atof.h fast_atoreal_move out-of-bounds
    21Monitor
  • CVE-2025-27539 days apartOpen Asset Import Library Assimp LWS File LWSLoader.cpp MergeScenes out-of-bounds
    21Monitor
  • CVE-2025-27559 days apartOpen Asset Import Library Assimp AC3D File ACLoader.cpp ConvertObjectSection out-of-bounds
    21Monitor
  • CVE-2025-27579 days apartOpen Asset Import Library Assimp MD5 File MD5Parser.cpp AI_MD5_PARSE_STRING_IN_QUOTATION heap-based overflow
    21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVSS vector

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:P/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-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records