Medium

Installed App Enumeration in Apple iCloud

IdentifiersCVE-2026-28833CWE-200

CVE-2026-28833 is an information disclosure/privacy vulnerability in the iCloud component of Apple operating systems. Apple states that, due to a permissions issue, a local app may be able to enumerate a user's installed apps. The issue was addressed by adding additional restrictions. Apple lists this vulnerability as fixed in iOS 26.4, iPadOS 26.4, macOS Tahoe 26.4, and visionOS 26.4. No further technical detail about the specific vulnerable function or code path is provided in the available advisory content.

For your environment

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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 a local application to discover which apps are installed on the target device. This leaks user environment and behavioral information that can be used for fingerprinting, profiling, targeting of follow-on attacks, or inference of sensitive user attributes based on installed software. The available information does not indicate direct code execution or privilege escalation from this issue alone.

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 applications, especially on devices where local app execution is permitted. Enterprise controls such as application allowlisting, MDM-enforced software restrictions, and minimizing third-party app presence can reduce the likelihood of exploitation. No vendor-specific workaround beyond updating is provided in the available content.

Remediation

Patch, then assume compromise.

Upgrade affected devices to a fixed release: iOS 26.4, iPadOS 26.4, macOS Tahoe 26.4, or visionOS 26.4, as applicable. Apple indicates the issue was remediated by imposing additional permission restrictions in the iCloud 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

AppleIpadosoperating_system

AppleIphone Osoperating_system

AppleMacosoperating_system

AppleVisionosoperating_system

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

ACTIVITY FEED

Recent activity

3 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

3 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

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 activity3