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Mallory
Medium

Information disclosure in Apple ImageIO via crafted image (bounds check issue)

IdentifiersCVE-2026-20675CWE-125· Out-of-bounds Read

Apple ImageIO contains a bounds-checking issue fixed via improved bounds checks. When ImageIO processes a maliciously crafted image, the out-of-bounds condition can result in disclosure of user information. The issue is addressed 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, iOS 26.3, and 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.

An attacker who can cause a target to process a maliciously crafted image may be able to disclose user information (information disclosure).

Mitigation

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

Until patched, reduce exposure to untrusted images: avoid opening/viewing images from unknown sources; restrict/disable automatic image preview/processing in high-risk workflows where feasible; use content filtering/sanitization such as proxy-side image re-encoding to strip malicious constructs before ImageIO processes the file.

Remediation

Patch, then assume compromise.

Apply Apple security updates that include the fix (improved bounds checks): 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, iOS 26.3, and iPadOS 26.3.
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
AppleIosoperating_system
AppleIpadosoperating_system
AppleIphone Osoperating_system
AppleMacosoperating_system
AppleMacos Sequoiaoperating_system
AppleMacos Sonomaoperating_system
AppleMacos Tahoeoperating_system
AppleTvosoperating_system
AppleVisionosoperating_system
AppleWatchosoperating_system

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity10

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