High

Memory corruption in Apple WebKit web content processing

IdentifiersCVE-2024-54543CWE-119

CVE-2024-54543 is an Apple vulnerability affecting Safari and multiple Apple operating systems, fixed in visionOS 2.2, tvOS 18.2, Safari 18.2, watchOS 11.2, iOS 18.2 and iPadOS 18.2, and macOS Sequoia 15.2. According to the provided Apple advisory text, processing maliciously crafted web content may lead to memory corruption. Apple states the issue was addressed with improved memory handling. The specific vulnerable function or code path is not identified in the provided content, but the issue is clearly in web content processing, consistent with a browser engine or WebKit memory-safety flaw triggered by attacker-controlled content.

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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 may allow an attacker to trigger memory corruption in the context of processing web content. Based on the provided information, this could plausibly result in application instability or potentially more serious consequences depending on exploitability, but the supplied content only explicitly confirms memory corruption and does not state confirmed code execution, information disclosure, or sandbox escape for this CVE.

Mitigation

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

Until patches are applied, reduce exposure to untrusted web content, especially in Safari and other components that render web content. Limit browsing to trusted sites where feasible and use updated systems and browsers as soon as possible. No specific workaround beyond patching is provided in the supplied content.

Remediation

Patch, then assume compromise.

Apply the vendor fixes provided by Apple. The issue is fixed in visionOS 2.2, tvOS 18.2, Safari 18.2, watchOS 11.2, iOS 18.2 and iPadOS 18.2, and macOS Sequoia 15.2. Upgrading affected devices and browsers to these versions or later is the primary remediation.

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

AppleSafariapplication

AppleTvosoperating_system

AppleVisionosoperating_system

AppleWatchosoperating_system

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

ACTIVITY FEED

Recent activity

3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

3 SOURCESView more in app

apple supportNews

Jan 25, 2026

About the security content of iOS 18.2 and iPadOS 18.2 - Apple Support

Unknown

apple supportNews

Jan 25, 2026

About the security content of visionOS 2.2 - Apple Support

A specific Apple Vision Pro vulnerability is referenced by CVE ID, but the provided content does not include impact/description details.

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.

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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 activity1