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VulnerabilityPublished

CVE-2025-53009: AcademySoftwareFoundation MaterialX · Stack-based Buffer Overflow

Affects AcademySoftwareFoundation MaterialXSource CVE Database V5

0

Public exploit available · CVSS 5.5 Medium · fixed in 1.39.3 : patch AcademySoftwareFoundation MaterialX as a priority.

Data as of 27 Oct 2026, 05:11 UTC

CVSS 4.0 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 51% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.39.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

European organizations should immediately audit their use of MaterialX and identify any instances running versions 1.39.2 or earlier. Upgrading to version 1.39.3 or later is the primary and most effective mitigation. For environments where immediate upgrade is not feasible, organizations should implement strict input validation and sanitization for all MTLX files, especially those received from external or untrusted sources. Employ sandboxing or process isolation for applications parsing MTLX files to contain potential crashes and prevent disruption of critical systems. Monitoring application logs for crashes related to MTLX parsing can help detect attempted exploitation. Additionally, organizations should review their supply chain and collaboration workflows to ensure that all partners are aware of the vulnerability and have applied the necessary patches. Incorporating static and dynamic analysis tools to detect malformed or malicious MTLX files before processing can further reduce risk. Finally, maintaining an incident response plan that includes handling denial of service scenarios related to rendering pipelines will improve resilience.

Description

MaterialX is an open standard for the exchange of rich material and look-development content across applications and renderers. In versions 1.39.2 and below, when parsing an MTLX file with multiple nested nodegraph implementations, the MaterialX XML parsing logic can potentially crash due to stack exhaustion. An attacker could intentionally crash a target program that uses OpenEXR by sending a malicious MTLX file. This is fixed in version 1.39.3.

References

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