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Mallory
Medium

Sandbox Escape in Apple Calendar

IdentifiersCVE-2025-24212CWE-284

CVE-2025-24212 is a sandbox escape vulnerability in Apple's Calendar component affecting multiple Apple platforms, including visionOS, iOS, iPadOS, tvOS, and macOS. Apple states that 'an app may be able to break out of its sandbox' and that the issue was addressed with improved checks. The available advisory data does not disclose the precise vulnerable function or root-cause mechanics beyond indicating a logic or access-control weakness in Calendar that permits a sandbox boundary bypass by a local app.

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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 malicious application to escape its assigned sandbox, undermining one of Apple's primary application isolation controls. This can enable access to resources, services, or data outside the app's intended security boundary, increasing the attacker's ability to interact with protected system components or user data and potentially serving as a stepping stone for further privilege escalation or post-exploitation activity.

Mitigation

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

Until patches are applied, reduce exposure by limiting installation and execution of untrusted or unnecessary applications, especially on devices where local app execution is permitted. Enforce application allowlisting or MDM controls where available, restrict sideloading or developer-mode style workflows, and monitor for anomalous app behavior indicative of sandbox boundary violations. No specific vendor-provided workaround beyond updating is available in the provided content.

Remediation

Patch, then assume compromise.

Apply the vendor fixes in the affected Apple operating systems. Apple reports this issue is fixed in visionOS 2.4, macOS Ventura 13.7.5, tvOS 18.4, iPadOS 17.7.6, iOS 18.4, iPadOS 18.4, macOS Sequoia 15.4, and macOS Sonoma 14.7.5. The issue was addressed by improved checks in the Calendar 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
AppleTvosoperating_system
AppleVisionosoperating_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.

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 activity5

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