What is CVE-2025-53009?

CVE-2025-53009 is a high-severity vulnerability in Academysoftwarefoundation Materialx, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-08-01.

How severe is CVE-2025-53009?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2025-53009 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Academysoftwarefoundation Materialx

CVE-2025-53009

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.

Vulnerability class: Buffer Overflow

Published 2025-08-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (46.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Academysoftwarefoundation Materialx — versions >= 1.39.2, < 1.39.3
Linuxfoundation Materialx — versions 1.39.2

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

Public proof-of-concept exploits

References

github.com/AcademySoftwareFoundation/MaterialX/security/advisories/GHSA-wx6g-fm… (Exploit, Vendor Advisory)
github.com/AcademySoftwareFoundation/MaterialX/issues/2504 (Issue Tracking)
github.com/AcademySoftwareFoundation/MaterialX/pull/2505 (Patch, Issue Tracking)
github.com/AcademySoftwareFoundation/MaterialX/releases/tag/v1.39.3 (Release Notes)
github.com/ShielderSec/poc/tree/main/CVE-2025-53009 (Exploit)

Frequently asked questions

What is CVE-2025-53009?: CVE-2025-53009 is a high-severity vulnerability in Academysoftwarefoundation Materialx, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-08-01.
How severe is CVE-2025-53009?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2025-53009 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.