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Mallory
Medium

Out-of-bounds access in Apple Audio media file processing

IdentifiersCVE-2025-43346CWE-125· Out-of-bounds Read

CVE-2025-43346 is an out-of-bounds access vulnerability in Apple Audio-related media file processing. According to the provided Apple advisory text, processing a maliciously crafted media file may lead to unexpected app termination or corrupt process memory. Apple states the issue was addressed through improved bounds checking. The vulnerability affects Apple platforms prior to the fixes released in iOS 18.7 and iPadOS 18.7, iOS 26 and iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26, and watchOS 26.

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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 can cause denial of service via unexpected application termination and may corrupt process memory in the affected media-processing context. The provided information does not confirm code execution, privilege escalation, or data disclosure, but memory corruption indicates potential for more severe impact depending on exploitability.

Mitigation

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

Until patched, reduce exposure to untrusted media content and avoid opening or processing media files from untrusted or unauthenticated sources. Where operationally feasible, limit attack surface by restricting automatic preview or parsing of externally supplied media files in vulnerable environments. No vendor-specific workaround beyond updating is provided in the supplied content.

Remediation

Patch, then assume compromise.

Apply the vendor fixes provided by Apple in iOS 18.7, iPadOS 18.7, iOS 26, iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26, and watchOS 26. Apple indicates the issue was remediated by improved bounds checking in the affected Audio/media parsing code.
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

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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 activity4

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