CVE-2026-75991 in Illustrator
Summary
by MITRE • 09/08/2026
Illustrator is affected by an Improper Input Validation vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Scope is changed.
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Analysis
by VulDB Data Team • 09/08/2026
The Adobe Illustrator application contains an improper input validation flaw within its core processing engine, which allows for the execution of arbitrary code under the context of the current user. This vulnerability stems from insufficient sanitization and verification mechanisms when handling specific data structures or file formats processed by the software. When a maliciously crafted file is opened, the application fails to properly validate the integrity and boundaries of the input data before processing it. This lack of rigorous checks enables an attacker to inject specially constructed payloads that exploit memory corruption errors, such as buffer overflows or use-after-free conditions, leading to arbitrary code execution. The scope change indicates that the vulnerability allows for privilege escalation relative to previous versions or specific configurations, meaning the impact extends beyond simple data exposure to full system compromise within the user's environment.
From a technical perspective, this flaw is categorized under CWE-20 Improper Input Validation and often manifests as CWE-119 Memory Corruption based on heap or stack operations during file parsing. The attack vector requires direct interaction from the victim, specifically the act of opening a malicious document created by an adversary. This aligns with ATT&CK technique T1203 Exploitation for Client Execution, where attackers rely on social engineering to trick users into executing malicious content disguised as legitimate files. Once executed, the payload can perform various actions including installing backdoors, stealing sensitive information, or pivoting to other systems within the network if lateral movement capabilities are present in the injected code.
The operational impact of this vulnerability is severe due to its potential for remote code execution without administrative privileges on the target machine. Since exploitation requires user interaction, it represents a high-risk threat vector commonly used in targeted attacks and spear-phishing campaigns. Organizations relying on Adobe Illustrator for design workflows must recognize that simply having the software installed does not guarantee safety if users are exposed to untrusted sources of files. The ability to execute code as the current user means that any data accessible by that user account becomes vulnerable, including personal documents, network credentials stored in browsers or password managers, and internal corporate resources mapped to the local drive.
Mitigation strategies must focus on both technical controls and user awareness training. Administrators should ensure that Adobe Illustrator is updated to the latest version where this input validation flaw has been patched by the vendor. Implementing application whitelisting can prevent unauthorized executables from running even if they are successfully injected into memory. Additionally, deploying endpoint detection and response solutions with behavioral analysis capabilities can help identify suspicious activity patterns associated with exploitation attempts, such as unusual process creation or memory access violations following file open events. Users must be educated to verify the source of all files before opening them in Illustrator and to avoid downloading documents from untrusted websites or email attachments unless their origin is confirmed secure. Regular security audits and penetration testing focused on document handling applications can further reduce the attack surface by identifying similar vulnerabilities before they are exploited in the wild.