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Mallory
High

Installed-app enumeration privacy issue in Apple StoreKit

IdentifiersCVE-2026-20641CWE-200· Exposure of Sensitive Information…

Information is currently not available to provide a detailed vulnerability description beyond the vendor advisory summary. The provided content indicates a privacy issue in Apple StoreKit where an app may be able to identify what other apps a user has installed; it was addressed with “improved checks” and fixed in watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 18.7.5/iPadOS 18.7.5, visionOS 26.3, and iOS 26.3/iPadOS 26.3.

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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.

Information is currently not available to provide a detailed impact assessment beyond the vendor advisory summary. Based on the content, successful exploitation enables privacy loss by allowing an app to infer the set of installed applications (user profiling / sensitive-interest inference / targeting).

Mitigation

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

No specific vendor workaround is described in the provided content. Practical mitigations prior to patching include restricting installation/execution of untrusted apps (particularly on managed fleets), enforcing MDM allowlisting, and monitoring for apps exhibiting behavior consistent with installed-app enumeration.

Remediation

Patch, then assume compromise.

Apply the relevant Apple OS updates that include the fix for CVE-2026-20641: watchOS 26.3, tvOS 26.3, visionOS 26.3, iOS 18.7.5, iPadOS 18.7.5, iOS 26.3, iPadOS 26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, or macOS Sequoia 15.7.4 (as applicable).
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
AppleTvosoperating_system
AppleVisionosoperating_system
AppleWatchosoperating_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

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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 activity9

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