Kernel input sanitization flaw in Apple iOS, iPadOS, and macOS
CVE-2026-43724 is a kernel vulnerability in Apple iOS, iPadOS, and macOS Tahoe. Apple states that the issue was addressed with improved input sanitization and that a malicious app may be able to cause unexpected system termination or write kernel memory. The flaw affects the Kernel component and was fixed in iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Based on the vendor description, the vulnerability is consistent with improper input validation/sanitization in kernel-facing handling reachable by an application, resulting in kernel memory write capability or a kernel panic/system crash condition.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A kernel vulnerability that could be exploited by a malicious app to cause unexpected system termination or write kernel memory.
A kernel vulnerability that may allow an app to trigger system termination or write kernel memory.
A vulnerability that could allow an app to cause unexpected system termination or write kernel memory.
A macOS Tahoe vulnerability that may allow an app to cause unexpected system termination or write kernel memory.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.