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CVE-2026-21301: Medium Vulnerability in Adobe Substance3D Modeler

Adobe Substance3D Modeler versions 1.22.4 and earlier are affected by a NULL Pointer Dereference vulnerability. This could lead to application denial-of-service, requiring user interaction to exploit. Immediate patching is recommended.

MEDIUMCVSS 5.5 · Published January 13, 2026

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Adobe Substance3D Modeler versions 1.22.4 and earlier are impacted by a NULL Pointer Dereference vulnerability. This vulnerability allows application denial-of-service, which could be triggered when a victim opens a specially crafted malicious file. The exploitation of this issue requires user interaction, making it a notable concern for users of the software.

With a CVSS score of 5.5, this vulnerability falls under the medium severity category. The potential impact on availability is high, as successful exploitation can lead to a complete denial of service for the affected application. Organizations utilizing Substance3D Modeler should prioritize addressing this vulnerability to mitigate any operational disruptions.

As of the current data, there is no known exploit publicly available, and the vulnerability has not been included in the Known Exploited Vulnerabilities (KEV) catalog. However, due to the nature of the vulnerability and its reliance on user interaction, it is crucial for organizations to remain vigilant and ensure that users are aware of the risks associated with opening untrusted files.

Organizations should prioritize patching immediately to reduce the risk associated with this vulnerability. Ensuring that all users are running the latest version of Adobe Substance3D Modeler will help in protecting against potential exploitation.

Vulnerability Details

This vulnerability allows a NULL Pointer Dereference in Adobe Substance3D Modeler versions 1.22.4 and earlier, which could lead to application denial-of-service. The CVSS score of 5.5 indicates medium severity, and the vulnerability requires user interaction for exploitation.

Technical Analysis

The root cause of this vulnerability is a NULL Pointer Dereference during the processing of malicious files. The attack vector is local, requiring the user to open the crafted file. The attack complexity is considered low, as it does not require advanced skills to execute, and no privileges are required to exploit the vulnerability. User interaction is mandatory, which could be a mitigating factor.

Risk & Impact Analysis

Risk to organizations includes potential downtime and disruption of services due to the denial-of-service condition that could be triggered by this vulnerability. As the attack vector requires user interaction, organizations should enhance user training to mitigate risks associated with opening malicious files.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

All versions prior to vendor patch (1.22.5) are affected. Organizations should ensure they are running the latest version of Adobe Substance3D Modeler.

Mitigation & Remediation

Organizations should prioritize patching immediately to address this vulnerability. The latest version of Adobe Substance3D Modeler (1.22.5) should be adopted to mitigate risks. In the absence of an update, organizations should implement strict file handling practices to prevent users from opening untrusted files.

Detection Guidance

Monitor logs for indicators of unauthorized file access or attempts to open malicious files. Look for behavioral anomalies related to application crashes or unexpected terminations of Adobe Substance3D Modeler.

AppSecure Threat Intelligence Insight

The long-term significance of this vulnerability highlights the importance of user awareness in preventing exploitation. Organizations should review their security training programs to ensure that users recognize the risks associated with opening untrusted files. This incident represents a broader trend of vulnerabilities that require user interaction to exploit, emphasizing the need for comprehensive security measures.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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