Adobe InDesign versions 21.0, 19.5.5 and earlier are affected by an Access of Uninitialized Pointer vulnerability. This vulnerability allows arbitrary code execution in the context of the current user. To exploit this vulnerability, user interaction is required, as the victim must open a malicious file.
With a CVSS score of 7.8, this vulnerability is classified as high severity. The risk to organizations includes unauthorized access and data manipulation, potentially leading to severe operational impacts. Organizations should prioritize patching immediately to mitigate potential exploitation.
Currently, there are no known exploits or public proof-of-concept available for this vulnerability, but its impact is significant enough that organizations should not underestimate the potential for future exploitation.
Organizations should address this vulnerability in their priority patch cycle to safeguard their systems from possible attacks that could emerge.
Vulnerability Details
The vulnerability identified as CVE-2026-21275 affects Adobe InDesign Desktop versions 21.0 and 19.5.5 and earlier. The issue arises from an Access of Uninitialized Pointer, which could allow attackers to execute arbitrary code. The CVSS score of 7.8 indicates that the vulnerability poses a high risk, especially as it could lead to confidentiality, integrity, and availability impacts.
The vulnerability is classified under CWE-824. The attack vector is local, requiring no privileges, but user interaction is required to open a malicious file.
This vulnerability was published on January 13, 2026, and is currently analyzed, with no known exploits confirmed.
Technical Analysis
The root cause of this vulnerability is the failure to initialize a pointer before its use, which can lead to unpredictable behavior and the potential for arbitrary code execution. The attack vector is classified as local, indicating that an attacker must have access to the vulnerable system.
The attack complexity is low, as it relies solely on user interaction to open a malicious file. No privileges are required to exploit this vulnerability, but user interaction is essential for the attack to succeed.
The impact of exploitation could result in high confidentiality, integrity, and availability impacts, making it crucial for organizations to be vigilant in addressing this issue.
Risk & Impact Analysis
The real-world risk associated with this vulnerability is significant, especially in environments where Adobe InDesign is widely used. The potential for arbitrary code execution means that attackers could gain control over affected systems, leading to data breaches or other malicious activities.
Organizations should consider the blast radius of this vulnerability, particularly in scenarios where InDesign is used to handle sensitive or proprietary information. The urgency for remediation is high, as attackers may eventually develop methods to exploit this vulnerability.
Given the high CVSS score and the potential impacts, organizations must act swiftly to mitigate this risk through timely patching and user education on the dangers of opening untrusted files.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of Adobe InDesign include versions 21.0 and 19.5.5, and all earlier versions prior to the vendor patch. Organizations must ensure they upgrade to the latest version to mitigate this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching Adobe InDesign to the latest version to address this vulnerability. If a patch is unavailable, users should be educated on the risks of opening untrusted files. Implementing strict file handling policies and monitoring for unusual behavior can also help mitigate risks.
For more comprehensive security assessments, consider utilizing penetration testing services to identify and remediate similar vulnerabilities.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual file access patterns and any attempts to execute untrusted files. Additionally, behavioral anomalies should be tracked to identify any unauthorized access attempts.
AppSecure Threat Intelligence Insight
CVE-2026-21275 highlights the ongoing risks associated with uninitialized pointers and the importance of secure coding practices. Organizations should regularly conduct security assessments to identify such vulnerabilities and implement robust security protocols.
For more insights on vulnerability management, explore our vulnerability management program and consider our penetration testing methodology for thorough assessments.
In conclusion, organizations must remain vigilant against emerging threats, continuously updating their defenses and training users on security best practices. The response to vulnerabilities like CVE-2026-21275 can significantly enhance overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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