CVE-2026-64715 in iOS
Summary
by MITRE • 08/17/2026
A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected process crash.
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Analysis
by VulDB Data Team • 08/18/2026
The vulnerability described is a classic use-after-free error, which falls under the Common Weakness Enumeration category CWE-416. This type of memory corruption flaw occurs when software continues to use a pointer after it has been freed from memory. In the context of web content processing, this typically involves JavaScript engines or browser rendering components that manage dynamic memory allocation for objects representing DOM elements, scripts, or other runtime structures. When an object is deallocated but references to it remain active in the application state, subsequent access attempts can lead to undefined behavior. The specific manifestation here results in an unexpected process crash rather than arbitrary code execution, suggesting that the exploitability may be limited by memory protection mechanisms such as Address Space Layout Randomization (ASLR) and Data Execution Prevention (DEP), or that the freed memory was quickly reallocated for non-critical data structures, causing a segmentation fault upon access.
From an operational perspective, this vulnerability impacts the stability and availability of applications running on iOS, iPadOS, macOS Tahoe, and potentially other Apple platforms depending on version alignment. While crashes are generally less severe than remote code execution vulnerabilities, they can still be leveraged for denial-of-service attacks against web-based services or local applications that process untrusted input. An attacker could craft malicious HTML, CSS, or JavaScript content designed to trigger the specific memory management flaw within the browser engine. Upon rendering this content, the application would terminate unexpectedly, disrupting user workflows and potentially causing data loss if unsaved work is present in the crashing session. This aligns with MITRE ATT&CK technique T1499, Endpoint Denial of Service, where an adversary aims to disrupt service availability through resource exhaustion or instability induction rather than compromising confidentiality or integrity directly.
The fix implemented involves improved memory management practices within the affected components. This likely includes rigorous tracking of object lifecycles, ensuring that pointers are nullified immediately after deallocation, and adding bounds checks before accessing potentially freed memory regions. Such enhancements prevent the application from interacting with invalid memory addresses, thereby eliminating the crash condition. The release of updates for iOS 18.7.10, iPadOS 18.7.10, iOS 26.6.1, iPadOS 26.6.1, and macOS Tahoe 26.6.2 indicates that Apple has prioritized the remediation of this issue across its major operating system families. Users are advised to update their devices immediately to mitigate the risk of exploitation by malicious web content encountered during routine browsing or through phishing campaigns designed to deliver crafted payloads.