CVE-2025-43295 is a denial-of-service (DoS) vulnerability identified in Apple’s iOS, iPadOS, and macOS operating systems. The root cause is insufficient validation within the affected OS components, which allows a malicious app to trigger resource exhaustion, leading to a system crash or unresponsiveness. This vulnerability is classified under CWE-400, which relates to uncontrolled resource consumption. The flaw can be exploited by an unprivileged application installed on the device, but it requires user interaction to initiate the attack, such as launching the malicious app or performing specific actions within it. The CVSS v3.1 score of 5.5 reflects a medium severity, with the attack vector being local (AV:L), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The impact is limited to availability (A:H) with no confidentiality or integrity compromise. Apple has released fixes in iOS 18.7, iPadOS 18.7, and macOS Sequoia 15.7, Sonoma 14.8, and Tahoe 26 to address this issue by implementing improved validation mechanisms to prevent resource exhaustion. No public exploits or active exploitation have been reported, indicating the vulnerability is currently theoretical but should be addressed proactively.

The primary impact of CVE-2025-43295 is a denial-of-service condition that can disrupt the availability of Apple devices running vulnerable versions of iOS, iPadOS, and macOS. For organizations, this could mean temporary loss of device functionality, potentially interrupting business operations, communications, or critical workflows relying on these devices. While the vulnerability does not affect confidentiality or integrity, repeated or targeted exploitation could degrade user productivity and increase support costs. The requirement for local access and user interaction reduces the likelihood of widespread remote attacks but does not eliminate risk in environments where users may install untrusted apps or open malicious content. Enterprises with large Apple device deployments, especially in sectors like healthcare, finance, or government where device availability is critical, may face operational disruptions if devices are not updated promptly. The absence of known exploits in the wild lowers immediate risk but does not preclude future exploitation attempts.

1. Immediately update all affected Apple devices to iOS 18.7, iPadOS 18.7, or the corresponding macOS versions (Sequoia 15.7, Sonoma 14.8, Tahoe 26) to apply the official patches. 2. Enforce strict app installation policies, limiting installations to trusted sources such as the Apple App Store and using Mobile Device Management (MDM) solutions to control app deployment. 3. Educate users about the risks of installing untrusted apps and the importance of avoiding suspicious links or prompts that require app interaction. 4. Monitor device performance and logs for signs of abnormal resource consumption or crashes that could indicate attempted exploitation. 5. Implement endpoint protection solutions capable of detecting anomalous app behavior on Apple devices. 6. For organizations with critical Apple device usage, consider network segmentation and limiting local access to devices to reduce exposure. 7. Maintain an inventory of Apple devices and their OS versions to ensure timely patch management and compliance verification.