CVE-2025-53009

MaterialX Stack Overflow via Lack of MTLX XML Parsing Recursion Limit

HIGH
7.5
CVSS Score
Published: August 1, 2025 at 05:57 PM UTC
Updated: June 17, 2026 at 09:37 AM UTC
2 products affected across 2 vendorsMaterialxMaterialX

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Severity
HIGH7.5
Exploit prediction
EPSS 0.7%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.39.3
Affected range stops below 1.39.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-121

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