Unrated

Use-After-Free in Apple WebKit/Safari

IdentifiersCVE-2026-43715CWE-416

CVE-2026-43715 is a use-after-free vulnerability in Apple WebKit, affecting Safari and the WebKit-based web content processing path on iOS, iPadOS, and macOS. Apple states that processing maliciously crafted web content may lead to memory corruption, and some advisories note this may manifest as an unexpected Safari crash. The issue was addressed through improved memory management. Fixed versions 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?

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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 corrupt memory in the browser or associated web content processing context. Based on the provided CVSS metadata, the vulnerability has high confidentiality, integrity, and availability impact, indicating potential outcomes beyond a crash, including arbitrary memory corruption that could plausibly be leveraged for code execution or data compromise, although the provided content explicitly confirms memory corruption and crash behavior rather than demonstrated code execution.

Mitigation

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

Until patching is completed, reduce exposure by limiting use of untrusted web content in Safari and other WebKit-dependent browsing contexts. Enterprise defenders can lower risk through web filtering, restricting access to untrusted sites, and minimizing user interaction with unsolicited links. No vendor-specific workaround beyond installing the fixed versions is provided in the supplied content.

Remediation

Patch, then assume compromise.

Apply the vendor fixes by upgrading to Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2 or later versions that include the patch. Apple states the issue was remediated with improved memory management.

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

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

8 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 use-after-free vulnerability that can lead to memory corruption when processing maliciously crafted web content.

the hacker newsNews

Jun 30, 2026

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

A WebKit use-after-free vulnerability that can lead to memory corruption when processing maliciously crafted web content.

handlers diary fullNews

Jun 30, 2026

June 2026 Apple Updates - SANS Internet Storm Center

A WebKit memory corruption vulnerability triggered by maliciously crafted web content.

apple supportNews

Jun 29, 2026

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

A use-after-free vulnerability in web content processing that could cause an unexpected Safari crash.

+3 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.

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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

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

EXTERNAL REFERENCES

MITRE CVE

cve.org · CVE-2026-43715

NVD

nvd.nist.gov/vuln/detail/CVE-2026-43715

MITRE CWE · CWE-416

cwe.mitre.org