InCopy versions 21.0, 19.5.5 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file. This vulnerability has been assigned a CVSS score of 7.8, categorizing it as high severity. Organizations should understand the implications of this vulnerability as it poses significant risks to user data and system integrity.
Risk to organizations includes potential unauthorized access, data corruption, and system crashes. Given the requirement for user interaction, the risk is somewhat mitigated, yet the vulnerability remains critical due to the potential impact on confidentiality, integrity, and availability. Organizations should prioritize patching immediately.
The vulnerability was published on January 13, 2026, by Adobe, and is classified under CWE-122 and CWE-787. It affects all versions of InCopy prior to 21.0 and 19.5.5. The urgency for defenders is high, and organizations should actively monitor for any related incidents.
Given that this vulnerability is not currently listed in the Known Exploited Vulnerabilities (KEV) database, there is no confirmed public exploit or proof of concept available. Nonetheless, organizations should remain vigilant.
Vulnerability Details
InCopy versions 21.0, 19.5.5 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. This vulnerability requires user interaction, as a victim must open a malicious file to trigger the exploit.
The vulnerability is classified as high severity with a CVSS score of 7.8. The attack vector is local, and the attack complexity is low, meaning that exploitation does not require sophisticated techniques. No privileges are required, and user interaction is necessary.
Technical Analysis
The root cause of this vulnerability is a heap-based buffer overflow, which occurs when a program attempts to write more data to a buffer than it can hold. This can lead to arbitrary code execution, allowing attackers to manipulate the program's execution flow.
The attack vector for this vulnerability is local, meaning that an attacker must have access to the local system. The complexity of the attack is low, indicating that an attacker could exploit this vulnerability with minimal effort. No privileges are required, which further simplifies the attack process.
Risk & Impact Analysis
Real-world deployment risk is significant due to the potential for unauthorized access and system compromise. The confidentiality, integrity, and availability impacts are all rated as high, which means that a successful exploitation could lead to serious security breaches.
This vulnerability is particularly relevant for organizations that use Adobe InCopy in environments where user files may be opened from untrusted sources. The urgency for addressing this vulnerability is high, and organizations should prioritize remediation efforts.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch, specifically InCopy versions 21.0 and 19.5.5, are affected by this vulnerability.
Mitigation & Remediation
Organizations should apply patches or updates as soon as they are made available by Adobe. If patches are not available, organizations should implement configuration hardening measures and user training to avoid opening suspicious files. Monitoring for unusual behavior in systems running affected versions is also recommended.
For more details on remediation strategies, organizations should consider engaging in penetration testing to identify and mitigate security vulnerabilities.
Detection Guidance
Monitoring logs for indicators related to file opening activities and any unexpected crashes of InCopy can help detect potential exploitation attempts. Behavioral anomalies in system performance or unauthorized access attempts should also be flagged for investigation.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability emphasizes the need for robust security practices within organizations using Adobe products. It highlights the ongoing challenge of managing software vulnerabilities and the importance of timely updates.
Organizations should consider reviewing their vulnerability management program to better handle such vulnerabilities in the future.
Additionally, to enhance security posture, implementing continuous security assessments through continuous penetration testing can provide ongoing insight into emerging threats.
Finally, organizations should remain informed about the latest trends in vulnerabilities and exploits through reliable sources, including publications from security firms and advisories like those from Adobe.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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