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Substance 3D Designer EUVDEUVD-2026-100702

| CVE-2026-103826 MEDIUM
NULL Pointer Dereference (CWE-476)
2026-10-13 psirt@adobe.com GHSA-wvm4-vmv4-5cqm
5.5
CVSS 3.1 · Vendor: adobe
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Craft malicious Substance 3D file
  2. Delivery
    Deliver file to victim user
  3. Exploit
    Victim opens file in Designer
  4. Execution
    NULL pointer dereference triggers
  5. Impact
    Application crashes (denial-of-service)

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A10:2025 - Mishandling of Exceptional Conditions
ASVS 5.0
V16 - Security Logging and Error Handling Null pointer safety, defensive checks
MITRE ATT&CK

1 technique across 1 tactic: Impact

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires an attacker to deliver a specially crafted malicious file and a victim to actively open that file in Adobe Substance 3D Designer version 16.0.4 or earlier; the flaw is local (AV:L) and cannot be triggered remotely without this user interaction (UI:R). No authentication is required of the attacker (PR:N), but the mandatory victim action of opening an untrusted file - plus the local-only vector and the limitation to application crash with no code execution or data impact - substantially constrains real-world risk to targeted social-engineering or supply-chain asset-delivery situations.

Impact

This is a moderate-severity, low-priority issue despite being network-labeled nowhere - the CVSS v3.1 vector (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) correctly reflects a local, user-interaction-dependent denial-of-service with no confidentiality or integrity impact, consistent with the CWE-476 NULL pointer dereference and the description's requirement that a victim open a malicious file. The 5.5 base score is driven entirely by the high availability impact (application crash); there is no code execution or data exposure. No EPSS score was provided in the input, the CVE is not listed in CISA KEV, and no public proof-of-concept is referenced, so all three exploitation-likelihood signals are either absent or negative. The signals are internally consistent - a file-parsing crash in a desktop authoring tool is a realistic but low-urgency problem, not a widespread remote threat. Missing data to note: no EPSS probability is available to gauge real-world exploitation interest.

Exploit ScenarioDerived

An attacker crafts a malicious Substance 3D Designer project or asset file and delivers it to a victim via email, a shared asset repository, or a compromised marketplace download. When the victim opens the file in Substance 3D Designer, a NULL pointer dereference is triggered and the application crashes, causing loss of unsaved work and a denial-of-service condition. No public exploit code is referenced at the time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 14, 2026

Application denial-of-service in Adobe Substance 3D Designer 16.0.4 and earlier, where a NULL pointer dereference (CWE-476) triggers a crash when the application processes a specially crafted file. Exploitation requires a victim to actively open a malicious asset, so the attack is local in nature (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H, base 5.5) - no attacker authentication is required, but the mandatory user action and the local vector sharply limit reachability to targeted social-engineering or supply-chain delivery of poisoned project files. Impact is limited to availability: there is no confidentiality or integrity loss and no evidence of code execution. There is no public exploit identified at time of analysis, and exploitation is not confirmed actively exploited (CISA KEV); overall this is a moderate-severity, low-priority issue best handled through routine patching of the affected build.

RemediationAI

Patch available per vendor advisory: install the fixed Adobe Substance 3D Designer release described in Adobe security bulletin APSB26-169 (https://www.adobe.com/trust/security/products/substance3d-designer/apsb26-169.html), which supersedes the affected 16.0.4-and-earlier builds - apply it to every workstation running Designer before handling externally sourced materials. Where immediate upgrade is not possible, reduce exposure by treating all inbound Substance project and material files (.sbs, .sbsar, and related asset bundles) as untrusted: strip or quarantine these attachments at the email and file-transfer gateway, require assets to be sourced from vetted vendors or internal repositories, and open unknown files only on an isolated or disposable workstation so that a crash cannot interrupt production work. Additional low-cost controls include enabling application crash monitoring/EDR alerting on the Designer process to detect repeated crash-on-open events, restricting untrusted users from opening third-party asset packs on shared render or build nodes, and keeping the authored asset pipeline read-only for non-owners. The trade-off of file-type blocking at the gateway is friction for legitimate vendor asset delivery and should be scoped to external senders, while sandboxed review adds manual triage effort; none of these mitigations prevent the crash itself, they only contain its blast radius, so the vendor patch remains the primary fix.

Affected VersionsENISA

Substance 3D Designer 0 ≤16.0.4 and prior

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The root cause is a NULL pointer dereference (CWE-476) in Adobe Substance 3D Designer, a procedural material and texture authoring tool used widely in game, film, and product-visualization pipelines. In this class of bug, the application follows a pointer that the parser or downstream processing routine failed to initialize or validate - typically because a crafted input file omits or malforms a field the code assumes is present - and the resulting dereference of address 0 terminates the process rather than yielding memory corruption. Because the crash maps to a pure availability impact, the assessed CVSS vector is AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H: the vector is local, the complexity is low once the file is delivered, no privileges are needed by the attacker (PR:N), but the victim must open the malicious file (UI:R), and the scope remains unchanged with no C/I effect. The CWE-476 classification and the Adobe PSIRT attribution are consistent with a file-parsing robustness defect rather than a remotely reachable, unauthenticated service flaw; the affected package is identified in EUVD as Substance 3D Designer 16.0.4 and prior.

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Severity by source

Vendor (adobe) PRIMARY 5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
vuln.today AI 5.5 MEDIUM

Local file must be opened by the user, so AV:L and UI:R; no attacker privileges needed (PR:N); crash-only yields A:H with C:N/I:N.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (adobe).

CVSS VectorVendor: adobe

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

DescriptionCVE.org

Substance3D - Designer is affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Threat Intelligence Overview

EPSS Score
0.1%
Top 97% exploitable
Prevalence
Low
niche 3D material-authoring tool for game/VFX artists
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A null pointer dereference occurs when a program attempts to access memory through a pointer that has been set to NULL (address 0x0).

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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