CVE-2025-24192 is a vulnerability discovered in Apple’s Safari browser and underlying operating systems including iOS, iPadOS, visionOS, and macOS Sequoia. The root cause is a script import issue that allowed insufficient isolation between web content and sensitive data contexts. When a user visits a maliciously crafted website, the vulnerability could be exploited to leak sensitive data from the device or browser environment. This data leakage impacts confidentiality but does not affect data integrity or system availability. The vulnerability requires no privileges and no authentication but does require user interaction in the form of visiting a malicious website. Apple fixed this issue by enhancing script isolation mechanisms in Safari 18.4 and corresponding OS updates (iOS 18.4, iPadOS 18.4, visionOS 2.4, macOS Sequoia 15.4). The CVSS v3.1 base score is 6.5, reflecting a medium severity level due to the ease of exploitation and high confidentiality impact. No known exploits have been reported in the wild as of the publication date. The vulnerability primarily affects Apple’s ecosystem and users who browse the web using Safari or embedded web views on affected OS versions. This flaw highlights the importance of strict content isolation in modern browsers to prevent cross-origin data leaks.

For European organizations, this vulnerability poses a risk of sensitive data leakage from Apple devices, including corporate iPhones, iPads, and Macs used by employees. Confidential information such as authentication tokens, personal data, or corporate secrets could be exposed if users visit malicious websites. This could lead to privacy violations, regulatory non-compliance (e.g., GDPR), and potential targeted espionage or data theft campaigns. The impact is particularly significant for sectors relying heavily on Apple devices, such as finance, healthcare, and government agencies. While the vulnerability does not allow code execution or system compromise, the confidentiality breach alone can have serious consequences for data protection and trust. Organizations with remote or mobile workforces using Apple devices are especially vulnerable. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, as attackers may develop exploits post-disclosure.

European organizations should prioritize updating all Apple devices to the patched versions: Safari 18.4, iOS 18.4, iPadOS 18.4, visionOS 2.4, and macOS Sequoia 15.4. Device management solutions should enforce these updates promptly. Network-level controls can be implemented to restrict access to untrusted or suspicious websites, using DNS filtering or secure web gateways. Security awareness training should emphasize the risks of visiting unknown or suspicious websites, especially on corporate devices. Organizations should audit and monitor device configurations to ensure no outdated versions remain in use. For high-risk environments, consider disabling or limiting Safari usage or embedding web views until patches are applied. Incident response plans should include monitoring for unusual data exfiltration patterns that could indicate exploitation attempts. Finally, organizations should maintain up-to-date threat intelligence feeds to detect any emerging exploits targeting this vulnerability.