Medium

WebKit process crash on malicious web content

IdentifiersCVE-2025-43441CWE-119· Improper Restriction of Operations…

CVE-2025-43441 is a WebKit memory-handling vulnerability affecting Apple platforms and downstream WebKit consumers. Apple states that the issue was addressed with improved memory handling and that processing maliciously crafted web content may lead to an unexpected process crash. The issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, and in WebKitGTK and WPE WebKit before 2.50.2. The available information does not identify the exact vulnerable function or root-cause subtype beyond a memory-handling flaw in WebKit.

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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 the targeted WebKit-related process, such as Safari or another application embedding WebKit, to terminate unexpectedly while rendering attacker-controlled content. Based on the provided information, the demonstrated impact is denial of service via process crash; no verified evidence in the supplied content indicates code execution or data disclosure for this specific CVE.

Mitigation

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

Until patching is completed, reduce exposure to untrusted web content, especially in applications that embed WebKit. Limit browsing to trusted sites, disable or restrict automatic rendering of external content where operationally feasible, and use application isolation or sandboxing controls to reduce the effect of renderer crashes. These are only partial mitigations; vendor updates are the primary fix.

Remediation

Patch, then assume compromise.

Update affected systems to a fixed release. Apple lists fixes in Safari 26.1, iOS 18.7.2, iPadOS 18.7.2, iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, and visionOS 26.1. For Linux and embedded consumers, upgrade WebKitGTK or WPE WebKit to version 2.50.2 or later.

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

AppleSafariapplication

AppleTvosoperating_system

AppleVisionosoperating_system

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

ACTIVITY FEED

Recent activity

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

6 SOURCESView more in app

zdnet zero dayNews

Jan 24, 2026

About the security content of iOS 26.1 and iPadOS 26.1 - Apple Support

Web content processing issue leading to unexpected process crash.

apple supportNews

Dec 12, 2025

About the security content of Safari 26.1 - Apple Support (MT)

A web content processing vulnerability involving memory handling that may cause an unexpected process crash on macOS Sonoma and macOS Sequoia.

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 activity4