Unrated

WebKit memory corruption in Apple Safari, iOS, iPadOS, and macOS Tahoe

IdentifiersCVE-2026-43707CWE-119

CVE-2026-43707 is a WebKit memory corruption vulnerability affecting Apple Safari, iOS, iPadOS, and macOS Tahoe. Apple describes the issue as a memory corruption flaw addressed through improved memory handling. When WebKit processes maliciously crafted web content, the flaw can trigger an unexpected process crash. Fixed versions listed in the provided content are Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2.

For your environment

Are you exposed to this one?

Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.

Start free trial

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 to crash while handling attacker-controlled web content, resulting in denial of service for the browser or associated content-processing process. The provided content does not confirm code execution, data disclosure, or sandbox escape for this CVE specifically.

Mitigation

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

Until patches can be applied, reduce exposure to untrusted web content and limit browsing to trusted sites where feasible, since exploitation requires processing maliciously crafted web content in WebKit. The provided content does not specify any vendor-supplied workaround other than installing the fixed versions.

Remediation

Patch, then assume compromise.

Upgrade affected systems to the fixed releases identified by Apple: Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2, or later versions incorporating the fix. Apple states the issue was remediated with 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

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

ACTIVITY FEED

Recent activity

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

7 SOURCESView more in app

security affairsNews

Jun 30, 2026

Apple Fixes WebKit Flaws in iOS and macOS, With Help From AI Tools - Security Affairs

A WebKit memory corruption vulnerability that can cause an unexpected process crash when handling specially crafted web content.

the hacker newsNews

Jun 30, 2026

Apple Patches 30+ iOS, macOS, Safari Flaws, Including AI-Discovered WebKit Bugs

A WebKit memory corruption vulnerability that can cause an unexpected process crash when processing maliciously crafted web content.

handlers diary fullNews

Jun 30, 2026

June 2026 Apple Updates - SANS Internet Storm Center

A WebKit vulnerability where malicious web content may cause an unexpected process crash.

apple supportNews

Jun 29, 2026

About the security content of iOS 26.5.2 and iPadOS 26.5.2 - Apple Support

A memory corruption vulnerability in web content processing that could cause an unexpected process crash.

+2 more in the timeline

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.

Start free trial

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

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

EXTERNAL REFERENCES

MITRE CVE

cve.org · CVE-2026-43707

NVD

nvd.nist.gov/vuln/detail/CVE-2026-43707

MITRE CWE · CWE-119

cwe.mitre.org