CVE-2026-43810 in iOS
Summary
by MITRE • 07/28/2026
The issue was addressed with improved memory handling. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. A remote user may be able to cause unexpected system termination or corrupt kernel memory.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a critical memory management flaw that could enable remote attackers to trigger system instability or kernel memory corruption across multiple Apple operating systems. The issue stems from inadequate memory handling mechanisms within the kernel subsystem, where improper memory allocation and deallocation processes create conditions for arbitrary code execution or system crashes. Such vulnerabilities typically arise when developers fail to properly validate memory operations or implement insufficient bounds checking during kernel-level memory management routines.
The technical nature of this flaw aligns with common software security weaknesses documented in the CWE database under categories related to memory corruption and improper handling of allocated resources. Attackers could potentially exploit this vulnerability by crafting malicious inputs that manipulate memory structures in ways that bypass normal safety mechanisms. The remote execution capability means that adversaries do not require physical access or local privileges to exploit the vulnerability, making it particularly dangerous in networked environments where systems are exposed to untrusted data sources.
The operational impact of this vulnerability extends beyond simple system crashes to potentially enable more sophisticated attacks such as privilege escalation or persistent system compromise. When kernel memory becomes corrupted, it can lead to unpredictable behavior including system panics, application crashes, or even complete system shutdowns that could be exploited for denial-of-service attacks. The vulnerability affects a broad range of Apple platforms, from mobile devices running iOS and watchOS to desktop operating systems like macOS and tvOS, indicating a fundamental flaw in the underlying kernel memory management subsystem.
Security professionals should note this vulnerability's alignment with ATT&CK framework techniques related to privilege escalation and defense evasion through system instability. The fix implemented by Apple addresses the root cause through enhanced memory handling procedures that likely include improved memory validation checks, better bounds enforcement, and more robust error handling mechanisms within the kernel. Organizations should prioritize patching across all affected platforms including iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, and watchOS 26.6 to mitigate the risk of exploitation. The remediation approach demonstrates Apple's response to memory safety concerns as outlined in industry best practices for kernel security and secure coding standards that emphasize proper resource management and memory integrity validation.