CVE-2025-24086 Overview
CVE-2025-24086 is a memory handling vulnerability affecting multiple Apple operating systems. The flaw allows a crafted image to trigger a denial-of-service condition when processed by the underlying image handling components. Apple addressed the issue with improved memory handling in iOS 18.3, iPadOS 18.3, iPadOS 17.7.4, macOS Sequoia 15.3, macOS Sonoma 14.7.3, macOS Ventura 13.7.3, tvOS 18.3, visionOS 2.3, and watchOS 11.3. The vulnerability requires local access and user interaction, but successful exploitation impacts availability by crashing the affected process or system component. It is categorized under [CWE-770] (Allocation of Resources Without Limits or Throttling).
Critical Impact
Processing a maliciously crafted image can cause a denial-of-service across iPhone, iPad, Mac, Apple TV, Apple Watch, and Apple Vision Pro devices running unpatched OS versions.
Affected Products
- Apple iOS and iPadOS (prior to iOS 18.3, iPadOS 18.3, and iPadOS 17.7.4)
- Apple macOS Sequoia (prior to 15.3), macOS Sonoma (prior to 14.7.3), and macOS Ventura (prior to 13.7.3)
- Apple tvOS (prior to 18.3), visionOS (prior to 2.3), and watchOS (prior to 11.3)
Discovery Timeline
- 2025-01-27 - CVE-2025-24086 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-24086
Vulnerability Analysis
The vulnerability resides in Apple's shared image processing code path used across its operating systems. When a specially crafted image file is parsed, the underlying routine mishandles memory allocation or lifecycle, resulting in an abnormal termination of the process performing the decode. Because image parsing is invoked by many first-party and third-party applications, including Messages, Mail, Safari, and Preview, the reachable attack surface is broad. Apple's advisories describe the fix as improved memory handling, which typically indicates tightening of allocation boundaries or lifecycle validation in the affected decoder.
Root Cause
The root cause is improper memory handling during image decoding, mapped to [CWE-770] for uncontrolled resource allocation. A crafted image can drive the decoder into a state where memory is not managed within safe bounds, producing an unrecoverable condition. The result is a denial-of-service rather than memory disclosure or code execution, consistent with the availability-only impact.
Attack Vector
Exploitation requires a local attack vector with user interaction. An attacker must deliver a crafted image to the target, typically via email attachment, messaging application, or a webpage rendered in a browser. When the victim opens or previews the image, the vulnerable decoder is invoked and the affected process crashes. No authentication is required, and no elevated privileges are needed to trigger the condition.
No public proof-of-concept code has been released for CVE-2025-24086. See the Apple Support advisories for the vendor's description of the affected component.
Detection Methods for CVE-2025-24086
Indicators of Compromise
- Repeated crashes of image-handling processes such as MediaLibraryService, Preview, Messages, or mediaserverd shortly after receiving or opening an image.
- Crash reports in ~/Library/Logs/DiagnosticReports/ referencing image codec frameworks after processing untrusted content.
- Delivery of unusual or malformed image files through Mail, Messages, or web downloads that consistently trigger application termination.
Detection Strategies
- Monitor endpoint telemetry for abnormal termination events tied to image rendering processes across macOS fleets.
- Correlate crash dumps with message or email delivery events to identify content-driven crash patterns.
- Track Apple OS build numbers across managed devices and flag those below the patched versions listed in Apple's advisories.
Monitoring Recommendations
- Aggregate macOS crash reports into a centralized log platform to identify clusters of image decoder failures.
- Use mobile device management (MDM) inventory data to enforce OS version compliance across iOS, iPadOS, macOS, tvOS, visionOS, and watchOS.
- Alert on unexpected inbound file types through email and messaging gateways that historically deliver crafted media payloads.
How to Mitigate CVE-2025-24086
Immediate Actions Required
- Update all Apple devices to the patched OS versions: iOS 18.3, iPadOS 18.3 or 17.7.4, macOS Sequoia 15.3, macOS Sonoma 14.7.3, macOS Ventura 13.7.3, tvOS 18.3, visionOS 2.3, and watchOS 11.3.
- Push updates to enrolled devices through MDM policies and confirm compliance through inventory reporting.
- Advise users to avoid opening image attachments from untrusted senders until patches are applied.
Patch Information
Apple has published fixes across all affected platforms. Refer to the vendor advisories: Apple Support Document #122066, #122067, #122068, #122069, #122070, #122071, #122072, and #122073.
Workarounds
- Disable automatic image preview in Messages and Mail on unpatched devices to reduce the likelihood of triggering the decoder on untrusted content.
- Restrict inbound image formats at email and messaging gateways where operationally feasible.
- Isolate legacy devices that cannot receive the patched OS versions from receiving external media until they are upgraded or replaced.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
