CVE-2025-24216 is a vulnerability in Apple Safari stemming from improper memory handling when processing specially crafted web content. The underlying weaknesses correspond to CWE-508, which involves failures in protection mechanisms, and CWE-119, which relates to improper restriction of operations within memory buffers, typically leading to buffer overflows or memory corruption. When a user visits a maliciously crafted webpage, Safari may crash unexpectedly due to this flaw, resulting in a denial-of-service condition. The vulnerability affects multiple Apple platforms, including Safari 18.4, iOS 18.4, iPadOS 18.4 and 17.7.6, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4, and watchOS 11.4. Exploitation requires no privileges and no authentication but does require user interaction (visiting a malicious site). The CVSS v3.1 base score is 4.3 (medium severity), reflecting network attack vector, low complexity, no privileges required, user interaction needed, and impact limited to availability (no confidentiality or integrity impact). Apple has remediated the issue by improving memory handling in the affected versions. There are no known exploits in the wild at this time, but the vulnerability could be leveraged to disrupt user experience or cause denial of service in environments relying on Safari for web access.

The primary impact of CVE-2025-24216 is denial of service due to unexpected Safari crashes when processing malicious web content. This can disrupt user productivity, especially in organizations heavily reliant on Safari for web-based applications or internal portals. While the vulnerability does not compromise confidentiality or integrity, repeated crashes could lead to operational disruptions, loss of user trust, and increased support costs. In environments where Safari is embedded in kiosks, digital signage, or other critical systems, this could cause significant availability issues. Additionally, attackers could use this vulnerability as part of a broader attack chain to distract or disrupt users. Since exploitation requires user interaction, phishing or social engineering campaigns could be used to lure victims to malicious sites. The lack of known exploits limits immediate risk, but the widespread use of Apple devices globally means the potential impact is significant if weaponized.

Organizations should prioritize updating all Apple devices to the patched versions: Safari 18.4, iOS 18.4, iPadOS 18.4 and 17.7.6, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4, and watchOS 11.4. Beyond patching, implement web filtering solutions to block access to known malicious sites and employ DNS filtering to reduce exposure to crafted web content. Educate users about the risks of clicking unknown or suspicious links, especially in emails or messaging platforms. Employ endpoint protection solutions capable of detecting abnormal browser crashes or memory corruption attempts. Monitor Safari crash logs and network traffic for unusual patterns that may indicate exploitation attempts. For high-security environments, consider restricting Safari usage or using alternative browsers until patches are applied. Regularly review and update incident response plans to include scenarios involving browser denial-of-service attacks.