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Mallory
High

Memory corruption in AppleJPEG file processing (Apple platforms)

IdentifiersCVE-2025-43539CWE-119· Improper Restriction of Operations…

The provided content does not include sufficient technical detail (e.g., vulnerable function/code path, precise parsing condition, or component call chain) to produce a detailed vulnerability description beyond: a memory corruption issue in the AppleJPEG component that can be triggered when processing a file, addressed by improved bounds checks, and fixed in watchOS 26.2, iOS 18.7.3/iPadOS 18.7.3, iOS 26.2/iPadOS 26.2, macOS Sonoma 14.8.3, macOS Sequoia 15.7.3, macOS Tahoe 26.2, visionOS 26.2, and tvOS 26.2.

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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.

The provided content does not include sufficient specific information to detail impact beyond indicating that processing a file may lead to memory corruption (which can commonly result in a crash/denial of service and, depending on exploitability, potentially arbitrary code execution).

Mitigation

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

The provided content does not include specific mitigations beyond patching. General mitigations consistent with the described trigger include reducing exposure to untrusted image/file content and limiting which applications/services automatically process such files, but no product-specific mitigations are stated in the content.

Remediation

Patch, then assume compromise.

Apply the vendor updates that include the bounds-checking fix: watchOS 26.2; iOS 18.7.3 and iPadOS 18.7.3; iOS 26.2 and iPadOS 26.2; macOS Sonoma 14.8.3; macOS Sequoia 15.7.3; macOS Tahoe 26.2; visionOS 26.2; tvOS 26.2.
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
AppleMacosoperating_system

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

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

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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 activity7

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