CVE-2025-30324 is a high-severity integer underflow vulnerability (CWE-191) affecting Adobe Photoshop Desktop versions 26.5, 25.12.2, and earlier. The flaw arises from improper handling of integer values within the application, which can cause an integer underflow or wraparound condition. This vulnerability can be exploited when a user opens a specially crafted malicious file in Photoshop. The underflow may lead to memory corruption, enabling an attacker to execute arbitrary code with the privileges of the current user. Exploitation requires user interaction—specifically, opening a malicious file—making social engineering or phishing a likely attack vector. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. No known exploits are currently reported in the wild, but the vulnerability is publicly disclosed and thus poses a significant risk if weaponized. The lack of available patches at the time of disclosure increases the urgency for mitigation and monitoring.

For European organizations, this vulnerability presents a substantial risk, especially for those relying heavily on Adobe Photoshop Desktop in creative industries, marketing, media, and design sectors. Successful exploitation could lead to arbitrary code execution, potentially allowing attackers to steal sensitive intellectual property, implant malware, or move laterally within networks. Given Photoshop's widespread use in Europe, a compromised system could serve as an entry point for broader attacks, including ransomware or espionage. The requirement for user interaction means phishing campaigns targeting European employees could be effective. Confidentiality is highly impacted due to potential data theft, integrity is compromised through unauthorized code execution, and availability could be disrupted if systems are destabilized or malware is deployed. The threat is particularly critical for organizations handling sensitive or proprietary visual content and those with less mature endpoint security controls.

European organizations should prioritize the following measures: 1) Immediately monitor Adobe's security advisories for patches addressing CVE-2025-30324 and apply updates as soon as they become available. 2) Implement strict email filtering and user awareness training to reduce the risk of opening malicious files, emphasizing the dangers of unsolicited or unexpected Photoshop files. 3) Employ application whitelisting and sandboxing techniques to limit the execution scope of Photoshop and isolate file handling processes. 4) Utilize endpoint detection and response (EDR) solutions to detect anomalous behaviors indicative of exploitation attempts. 5) Enforce the principle of least privilege, ensuring users run Photoshop with minimal necessary permissions to limit potential damage. 6) Regularly back up critical data and verify recovery procedures to mitigate impact from potential ransomware or destructive payloads delivered via this vulnerability. 7) Conduct targeted phishing simulations to reinforce user vigilance against social engineering attacks leveraging this vulnerability.