CVE-2025-43413 is a vulnerability in Apple’s iOS, iPadOS, and other related operating systems that allows a sandboxed application to observe system-wide network connections. The root cause is an access control weakness where sandbox restrictions were insufficient to prevent apps from monitoring network activity beyond their own scope. This flaw violates the principle of least privilege and compromises user privacy by exposing metadata about network connections system-wide. The vulnerability affects multiple Apple platforms, including iOS, iPadOS, macOS Sequoia, macOS Sonoma, macOS Tahoe, tvOS, visionOS, and watchOS, with fixes released in version 26.1 for most platforms. The CVSS v3.1 base score is 7.5, indicating high severity due to network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), and high confidentiality impact (C:H) with no impact on integrity or availability. The vulnerability is associated with CWE-693 (Protection Mechanism Failure) and CWE-284 (Improper Access Control). No known exploits are reported in the wild yet. This vulnerability could be leveraged by malicious apps to gather sensitive network information, potentially aiding further attacks or surveillance.

The primary impact of CVE-2025-43413 is the compromise of confidentiality, as malicious sandboxed apps can observe system-wide network connections, potentially exposing sensitive metadata such as destination IPs, ports, and connection timing. This can facilitate user tracking, profiling, or reconnaissance for further attacks. Although integrity and availability are not directly affected, the exposure of network information can undermine user privacy and organizational security posture. For enterprises and government agencies relying on Apple devices, this vulnerability could enable insider threats or malicious apps to bypass intended sandbox isolation, increasing the risk of data leakage. The ease of exploitation without privileges or user interaction broadens the attack surface, making it feasible for attackers to deploy malicious apps through app stores or sideloading. The lack of known exploits in the wild reduces immediate risk but does not eliminate potential future exploitation. Overall, this vulnerability poses a significant threat to privacy-sensitive environments and organizations with high security requirements.

Organizations and users should promptly update affected Apple devices to iOS 26.1, iPadOS 26.1, and corresponding versions of macOS, tvOS, visionOS, and watchOS as soon as patches are available. Beyond patching, enterprises should enforce strict app vetting policies, limiting installation to trusted sources and employing Mobile Device Management (MDM) solutions to control app permissions and sandboxing configurations. Monitoring network traffic for unusual patterns or unauthorized access attempts can help detect exploitation attempts. Developers should review app sandboxing implementations and ensure adherence to least privilege principles. Security teams should educate users about the risks of installing untrusted apps and consider deploying endpoint detection and response (EDR) tools tailored for Apple platforms. Finally, organizations should maintain an inventory of Apple devices and ensure timely OS updates to reduce exposure windows.