CVE-2025-46305 is a vulnerability in Apple’s iOS and iPadOS operating systems that arises from improper bounds checking in handling input from Human Interface Devices (HIDs). HIDs include peripherals such as keyboards, mice, and other input devices that communicate with the system. A maliciously crafted HID can send data that triggers a buffer overflow or similar memory corruption condition, leading to an unexpected process crash. This vulnerability is classified under CWE-119, indicating a classic buffer bounds violation. The flaw affects multiple Apple platforms, including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS, with patches released in versions iOS 18.7.5, iPadOS 18.7.5, macOS Sequoia 15.7.4, and others. The CVSS v3.1 base score is 5.7 (medium severity), reflecting that the attack vector is adjacent network (AV:A), with low attack complexity (AC:L), no privileges required (PR:N), but user interaction is necessary (UI:R). The vulnerability impacts availability only (A:H), causing denial of service by crashing processes. No confidentiality or integrity impact is noted. No known exploits have been reported in the wild, but the potential for denial of service attacks exists if malicious HIDs are connected to vulnerable devices. The fix involves improved bounds checking to prevent out-of-bounds memory access.

The primary impact of CVE-2025-46305 is denial of service through unexpected process crashes on affected Apple devices. For organizations, this could lead to temporary disruption of critical applications or services running on iOS or iPadOS devices, potentially affecting productivity or operational continuity. Since the vulnerability requires user interaction and a malicious HID device physically connected or logically connected via an adjacent network, remote exploitation is limited but not impossible in environments where such devices can be introduced. There is no direct impact on confidentiality or integrity, so data breaches or unauthorized data modification are not concerns here. However, repeated crashes could degrade user trust and device reliability. In high-security or sensitive environments, such denial of service could be leveraged as part of a broader attack chain or to cause distraction during other malicious activities. The absence of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits post-disclosure.

Organizations should prioritize updating affected Apple devices to the patched versions: iOS 18.7.5, iPadOS 18.7.5, macOS Sequoia 15.7.4, and corresponding updates for other Apple OSes. Beyond patching, organizations should implement strict controls on physical and logical access to devices, limiting the introduction of untrusted HID devices. Employ device management policies that restrict or monitor USB and Bluetooth peripherals, and consider endpoint security solutions capable of detecting anomalous HID behavior. User training is important to raise awareness about the risks of connecting unknown peripherals. Network segmentation and limiting adjacent network access can reduce exposure to malicious HID devices that communicate over wireless protocols. Regularly audit device inventories and peripheral usage to detect unauthorized hardware. Finally, monitor system logs for unusual process crashes that could indicate attempted exploitation.