React Native is a popular framework for building cross-platform mobile applications using JavaScript and native components. The reported vulnerability, initially considered theoretical, has now been exploited in the wild, indicating attackers have found practical methods to leverage it. While the exact technical details and affected versions are not disclosed, the exploitation reportedly allows attackers to disable security protections within the React Native environment. This capability enables the delivery and execution of malware on devices running vulnerable React Native applications. The attack vector likely involves manipulation of the app's runtime environment or bypassing built-in security controls, potentially through code injection or exploitation of native module interfaces. The absence of patch information suggests that the vulnerability is either zero-day or that vendors have not yet released fixes. The critical severity classification reflects the high impact potential, including unauthorized code execution, data exfiltration, and persistent compromise of mobile devices. Given React Native's widespread use in enterprise and consumer mobile apps, this vulnerability poses a significant risk to application integrity and user data security.

For European organizations, the exploitation of this React Native vulnerability could lead to severe consequences. Mobile applications used for business operations, customer engagement, or sensitive data handling may be compromised, resulting in data breaches, intellectual property theft, or disruption of services. Malware delivered through this vulnerability could facilitate espionage, ransomware deployment, or unauthorized access to corporate networks via compromised mobile endpoints. Industries such as finance, healthcare, telecommunications, and government services, which rely heavily on secure mobile applications, are particularly vulnerable. The reputational damage and regulatory penalties under GDPR for data breaches could be substantial. Additionally, the lack of available patches increases the window of exposure, necessitating immediate risk management and incident response preparedness. The threat also raises concerns about supply chain security, as third-party React Native components might be exploited to propagate malware.

Given the lack of specific patches or detailed technical guidance, European organizations should adopt a multi-layered mitigation approach. First, conduct an inventory of all mobile applications built with React Native and assess their exposure. Implement runtime application self-protection (RASP) and mobile threat defense (MTD) solutions to detect and block suspicious behaviors. Enforce strict code signing and integrity verification to prevent unauthorized code modifications. Limit permissions and isolate sensitive data within applications using secure storage and encryption. Monitor network traffic for anomalies indicative of malware communication. Engage with React Native framework maintainers and vendors for updates and advisories. Encourage developers to follow secure coding practices, minimize use of vulnerable native modules, and apply any available security patches promptly. Finally, prepare incident response plans specific to mobile malware infections and conduct user awareness campaigns about mobile security risks.