CVE-2022-26744 in iOS
Summary
by MITRE • 05/27/2022
A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 15.5 and iPadOS 15.5. An application may be able to execute arbitrary code with kernel privileges.
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Analysis
by VulDB Data Team • 05/12/2026
The vulnerability identified as CVE-2022-26744 represents a critical memory corruption flaw that existed within the kernel-level processing mechanisms of iOS and iPadOS operating systems. This issue stems from inadequate state management within the kernel's memory handling routines, creating opportunities for malicious applications to exploit memory corruption patterns that could lead to privilege escalation. The vulnerability specifically affects devices running iOS 15.4 and earlier versions, as well as iPadOS 15.4 and earlier releases, with the issue being resolved through the security updates included in iOS 15.5 and iPadOS 15.5.
The technical exploitation of this vulnerability occurs through memory corruption techniques that leverage improper state handling within kernel memory spaces. When an application attempts to manipulate kernel memory structures, the flawed state management mechanisms fail to properly validate or enforce memory boundaries, allowing for potential buffer overflows or memory corruption scenarios. This type of vulnerability falls under the CWE-121 category of stack-based buffer overflow, though the kernel context suggests more complex memory management issues. The flaw enables an attacker to craft malicious applications that can manipulate kernel memory layouts, potentially executing arbitrary code with the highest privilege level available to the system. Such privilege escalation allows attackers to bypass normal security restrictions and gain complete control over the affected device.
The operational impact of CVE-2022-26744 is severe given that it enables full system compromise through kernel-level execution. An attacker who successfully exploits this vulnerability can gain root privileges on the device, allowing them to access all user data, install malicious applications, monitor communications, and potentially perform surveillance activities. The attack vector typically involves a malicious application that appears legitimate to users but contains code designed to trigger the memory corruption flaw. This vulnerability directly impacts the core security model of iOS and iPadOS, as it undermines the fundamental isolation between user applications and system processes that these operating systems rely upon for security. The risk is particularly concerning for enterprise environments where iOS devices may contain sensitive corporate data and for individuals who rely on these devices for personal privacy protection.
Mitigation strategies for CVE-2022-26744 primarily focus on immediate system updates and security hardening measures. Organizations and individual users must prioritize updating to iOS 15.5 or later versions to receive the patched kernel state management mechanisms. Additionally, implementing application whitelisting policies and monitoring for suspicious application behavior can help detect potential exploitation attempts. Security teams should conduct comprehensive vulnerability assessments of their iOS device fleets to identify systems running vulnerable versions. The fix implemented by Apple addresses the root cause through enhanced kernel memory state tracking and improved validation mechanisms, which aligns with ATT&CK technique T1068 for privilege escalation and T1543 for kernel rootkits. Network monitoring solutions should also be configured to detect unusual patterns that might indicate exploitation attempts, particularly around kernel memory access patterns and privilege escalation activities.