Critical

Memory corruption in Apple WebKit web content processing

IdentifiersCVE-2024-54534CWE-119

CVE-2024-54534 is an Apple vulnerability affecting web content processing. Apple states that processing maliciously crafted web content may lead to memory corruption. The issue was addressed through improved memory handling and fixed in watchOS 11.2, visionOS 2.2, tvOS 18.2, macOS Sequoia 15.2, Safari 18.2, iOS 18.2, and iPadOS 18.2. Based on the available advisory text, the flaw is a memory-safety issue in the handling of web content, but Apple does not provide public detail on the specific vulnerable function, code path, or corruption primitive.

For your environment

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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 affected web content processing context. Depending on the exact corruption conditions and exploitability, this could result in application instability or crashes and may create a path toward arbitrary code execution, but the provided content only explicitly confirms memory corruption.

Mitigation

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

Apply the vendor patches. Until updates are deployed, reduce exposure by limiting access to untrusted or attacker-controlled web content, especially in Safari or embedded web views, and use standard browser hardening and isolation controls where operationally feasible. No specific vendor workaround is provided in the supplied content.

Remediation

Patch, then assume compromise.

Upgrade affected systems to a fixed release: watchOS 11.2, visionOS 2.2, tvOS 18.2, macOS Sequoia 15.2, Safari 18.2, iOS 18.2, or iPadOS 18.2, as applicable. Apple indicates the issue was remediated by improved memory handling.

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

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

4 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