CVE-2025-30427 in Safari
Summary
by MITRE • 04/01/2025
A use-after-free issue was addressed with improved memory management. This issue is fixed in visionOS 2.4, tvOS 18.4, iPadOS 17.7.6, iOS 18.4 and iPadOS 18.4, macOS Sequoia 15.4, Safari 18.4. Processing maliciously crafted web content may lead to an unexpected Safari crash.
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Analysis
by VulDB Data Team • 04/10/2025
The vulnerability identified as CVE-2025-30427 represents a critical use-after-free condition that affects multiple Apple operating systems including visionOS tvOS iPadOS and macOS platforms. This memory safety issue arises from improper handling of memory allocation and deallocation processes within the affected software components. The flaw manifests when the system processes maliciously crafted web content through Safari browser which triggers an unexpected crash scenario. Such vulnerabilities typically occur when a program continues to reference memory locations after they have been freed or deallocated, creating opportunities for attackers to exploit the memory state for malicious purposes.
The technical implementation of this vulnerability falls under the common weakness enumeration CWE-416 which specifically addresses use-after-free conditions in software development. This particular flaw demonstrates how improper memory management can create exploitable conditions within web rendering engines and browser components. When Safari processes compromised web content the memory management system fails to properly track object references, leading to situations where freed memory blocks are still accessed or manipulated by subsequent operations. The issue affects the core browser rendering pipeline where web content is parsed and executed, making it particularly dangerous in web-based attack scenarios.
The operational impact of CVE-2025-30427 extends beyond simple browser crashes to potentially enable more sophisticated attack vectors. While the immediate effect is an unexpected Safari crash, the underlying memory corruption could theoretically allow attackers to execute arbitrary code or escalate privileges. The vulnerability affects multiple platforms simultaneously indicating a systemic issue within Apple's web rendering architecture that requires comprehensive patching across all affected operating systems. Security researchers have noted that use-after-free vulnerabilities often serve as stepping stones for more severe exploits, particularly when combined with other memory corruption issues or when targeting specific application components.
Organizations and end users should prioritize immediate deployment of the available patches for visionOS 2.4 tvOS 18.4 iPadOS 17.7.6 iOS 18.4 iPadOS 18.4 macOS Sequoia 15.4 and Safari 18.4 as these releases contain the necessary memory management improvements. The mitigation strategy should include comprehensive system updates across all affected platforms to prevent exploitation attempts. Security teams should monitor for potential exploitation attempts targeting this vulnerability through web-based attack vectors and implement network monitoring to detect malicious web content delivery. Additionally the vulnerability aligns with attack techniques described in the attack tree framework where memory corruption issues serve as initial access points for more comprehensive compromise scenarios.
The fix implemented by Apple addresses the root cause through enhanced memory management protocols that properly track object lifecycles and prevent access to deallocated memory regions. This approach aligns with industry best practices for memory safety and follows established security guidelines for preventing use-after-free conditions in modern software systems. The patch demonstrates Apple's commitment to addressing memory safety issues through systematic code review and improved allocation management processes that reduce the likelihood of similar vulnerabilities in future releases.