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Mallory
Medium

Sensitive user data access race condition in Apple FileProvider

IdentifiersCVE-2026-43659CWE-362· Concurrent Execution using Shared…

CVE-2026-43659 is a race condition vulnerability in Apple FileProvider. Apple states that the issue could allow an app to access sensitive user data. The flaw was addressed with additional validation. The vulnerability is documented across multiple Apple platforms, including iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sonoma 14.8.7, macOS Sequoia 15.7.7, macOS Tahoe 26.5, and visionOS 26.5. No further technical detail about the specific code path or function has been provided in the supplied content.

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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 may allow a locally running app to access sensitive user data that it should not be able to access. Based on the supplied advisory text, the primary impact is confidentiality loss rather than code execution or privilege escalation.

Mitigation

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

If immediate patching is not possible, reduce exposure by limiting installation and execution of untrusted or unnecessary apps, enforcing application allowlisting or MDM controls where available, and restricting access to sensitive data workflows on affected devices until updates can be applied. No vendor-specific workaround beyond installing the fixed releases is provided in the supplied content.

Remediation

Patch, then assume compromise.

Apply the vendor fixes provided by Apple. The issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sonoma 14.8.7, macOS Sequoia 15.7.7, macOS Tahoe 26.5, and visionOS 26.5.
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
AppleIpadosoperating_system
AppleIphone Osoperating_system
AppleMacosoperating_system
AppleVisionosoperating_system

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

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.
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 activity4

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