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Sensitive kernel state leak in Apple Kernel

IdentifiersCVE-2026-43722CWE-20

CVE-2026-43722 is a Kernel vulnerability in Apple operating systems that affects iOS, iPadOS, and macOS. Apple states that a malicious app may be able to leak sensitive kernel state. The issue was addressed through improved input sanitization and is fixed in iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Based on the available information, the flaw is in the Kernel component and stems from insufficient sanitization of attacker-controlled input reaching kernel code, resulting in unintended disclosure of sensitive kernel state.

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ANALYST BRIEF

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.

Successful exploitation allows an app to disclose sensitive kernel state. Such leakage can expose privileged internal kernel information that may aid further exploitation, including bypassing exploit mitigations or improving the reliability of chained attacks against the operating system kernel.

Mitigation

If you can’t patch tonight, do this now.

Where immediate patching is not possible, reduce exposure by limiting installation and execution of untrusted or unnecessary applications, enforcing application allowlisting or mobile device management controls where available, and restricting users from sideloading or otherwise running untrusted apps. No vendor-specific workaround beyond applying the security updates is provided in the available information.

Remediation

Patch, then assume compromise.

Upgrade affected systems to the fixed releases provided by Apple: iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Apple indicates the vulnerability was remediated by improved input sanitization in the Kernel component.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

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.

VendorProductType
AppleIosoperating_system
AppleIpadosoperating_system
AppleMacos Tahoeoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

6 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-43722
NVD
nvd.nist.gov/vuln/detail/CVE-2026-43722
MITRE CWE · CWE-20
cwe.mitre.org