CVE-2026-21300 is a NULL Pointer Dereference vulnerability affecting Adobe Substance3D Modeler versions 1.22.4 and earlier. This vulnerability allows attackers to cause application denial-of-service, impacting users who open a malicious file. As the CVSS score is 5.5, it is classified as medium severity, warranting attention from organizations.
The exploitation of this vulnerability necessitates user interaction, as the victim must open a specifically crafted file. This aspect adds a layer of complexity to the attack, but it remains a significant risk, particularly for organizations using affected versions of the software.
Organizations should prioritize patching immediately to mitigate the risk of denial-of-service attacks that could arise from this vulnerability. The interaction required for exploitation underscores the importance of user awareness and training.
Given the potential impact on service availability, it is critical for defenders to address this vulnerability as part of their immediate security strategy.
Vulnerability Details
The official description indicates that Adobe Substance3D Modeler versions 1.22.4 and earlier are affected by this NULL Pointer Dereference vulnerability. The CVSS score of 5.5 reflects a medium severity level, with an attack vector classified as local and a low attack complexity. No privileges are required for exploitation, but user interaction is necessary.
The publication date for this vulnerability is January 13, 2026, and it is classified under CWE-476. The absence of known exploits and its current status as 'Analyzed' indicate that while the threat exists, it has not yet been actively weaponized.
Technical Analysis
The root cause of this vulnerability lies in the handling of pointer dereferencing within the application. If a user opens a maliciously crafted file, it can trigger a NULL Pointer Dereference, resulting in application instability and potential crashes.
The attack vector is local, which means an attacker would need physical or logical access to the system to exploit the vulnerability. With low complexity and no required privileges, the barrier to exploitation is relatively low from the attacker's perspective.
User interaction is required for this vulnerability to be exploited, as victims must open the malicious file. The impact on availability is rated high, indicating that successful exploitation could lead to significant service disruption.
Risk & Impact Analysis
Organizations utilizing Adobe Substance3D Modeler must recognize the real-world risks associated with CVE-2026-21300. The requirement for user interaction means that while the attack is less likely to occur in automated scenarios, it remains a significant concern when users are exposed to malicious files.
The medium severity rating should prompt organizations to assess their deployment of the affected software and implement necessary security measures. The potential for denial-of-service attacks could impact business operations, making timely remediation essential.
Given that the CVSS score indicates a medium risk level, organizations should address this vulnerability in their priority patch cycle to mitigate potential disruptions.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include all releases of Adobe Substance3D Modeler prior to version 1.22.5. Organizations should ensure that they update their software to the latest version to mitigate this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations should update Adobe Substance3D Modeler to version 1.22.5 or later. If a patch is not immediately available, it is advisable to restrict the opening of files from untrusted sources and implement user training to recognize potential threats.
Additionally, consider deploying monitoring solutions to detect abnormal application behavior that may indicate an attempted exploit of this vulnerability. For comprehensive security assessments, organizations may engage in penetration testing to evaluate the overall security posture.
Detection Guidance
Monitoring for this vulnerability involves observing application logs for unusual error messages or crashes that coincide with file openings. Additionally, organizations should be aware of any behavioral anomalies that may indicate user interaction with malicious files.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-21300 lies in its demonstration of how seemingly low-risk vulnerabilities can still lead to significant impacts if left unaddressed. This situation highlights the necessity for organizations to maintain proactive security measures and be vigilant about user education.
This vulnerability also serves as a reminder for security teams to continually assess and prioritize vulnerabilities based on real-world exploitability and impact potential. For further strategic insights, organizations can explore our vulnerability management program and the importance of regular security assessments.
By understanding the patterns and trends in vulnerabilities, organizations can better prepare against future threats and ensure their defenses remain robust. Engaging in penetration testing can help validate the effectiveness of current security measures.
In conclusion, CVE-2026-21300 exemplifies the necessity of remaining vigilant and proactive in cybersecurity practices to mitigate risks associated with vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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