CVE-2025-49532 is an integer underflow vulnerability classified under CWE-191 affecting Adobe Illustrator versions 28.7.6, 29.5.1, and earlier. Integer underflow occurs when an arithmetic operation causes a value to wrap around below its minimum representable value, potentially leading to memory corruption or logic errors. In this case, the vulnerability allows an attacker to craft a malicious Illustrator file that, when opened by a user, triggers the underflow condition. This can result in arbitrary code execution within the context of the current user, compromising confidentiality, integrity, and availability of the affected system. The attack vector requires local user interaction (opening a malicious file), no privileges are required to exploit, and the vulnerability affects the scope of the user’s session. The CVSS 3.1 base score of 7.8 reflects high severity due to the combination of high impact on confidentiality, integrity, and availability, and relatively low complexity of exploitation. Although no active exploits have been reported, the vulnerability poses a significant risk to users of affected Illustrator versions, especially in environments where untrusted files may be opened. Adobe has not yet released a patch, so mitigation currently relies on user awareness and restrictive file handling policies.

The exploitation of this vulnerability can lead to arbitrary code execution, allowing attackers to run malicious code with the same privileges as the current user. This can result in unauthorized access to sensitive design files, intellectual property theft, data corruption, or disruption of design workflows. For organizations, this could mean loss of proprietary information, damage to brand reputation, and operational downtime. Since the vulnerability requires user interaction, phishing or social engineering campaigns could be used to deliver malicious files, increasing the risk of targeted attacks. The impact is particularly severe in creative industries, advertising agencies, and media companies that heavily rely on Adobe Illustrator for daily operations. Additionally, compromised systems could be used as footholds for lateral movement within corporate networks, escalating the threat beyond individual workstations.

1. Immediately implement strict policies to avoid opening Illustrator files from untrusted or unknown sources. 2. Use sandboxing or isolated environments for opening files from external sources to contain potential exploitation. 3. Employ endpoint protection solutions capable of detecting anomalous behavior related to code execution in Illustrator. 4. Monitor user activity and network traffic for signs of exploitation attempts, especially in creative departments. 5. Educate users about the risks of opening unsolicited or suspicious files and encourage verification of file origins. 6. Once Adobe releases an official patch, prioritize its deployment across all affected systems. 7. Consider application whitelisting to restrict execution of unauthorized code. 8. Maintain regular backups of critical design files to mitigate data loss in case of compromise.