Skip to main content
Meet us at Black Hat USA 2026— Las Vegas, August 1–6Book a Meeting
Mallory
Back to vulnerabilities
Unrated

WebKit process crash via malicious web content in Apple Safari/iOS/iPadOS/macOS

IdentifiersCVE-2026-43712CWE-119

CVE-2026-43712 is a WebKit vulnerability in Apple web content processing caused by improper memory handling. Apple states that processing maliciously crafted web content may lead to an unexpected process crash. The issue affects Safari 26.5.2 prior versions, iOS 26.5.2 prior versions, iPadOS 26.5.2 prior versions, and macOS Tahoe 26.5.2 prior versions; mention contexts also reference macOS Sonoma and macOS Sequoia/Safari. The flaw was addressed by Apple through improved memory handling.

Share:
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/Safari-related process to crash when rendering attacker-controlled web content, resulting in denial of service for the affected browser or web content process. Based on the provided content, there is no specific evidence that this issue enables code execution, privilege escalation, or data disclosure beyond process termination/crash.

Mitigation

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

Until patches can be applied, reduce exposure to untrusted web content by limiting browsing to trusted sites, disabling or restricting access to untrusted links and embedded web content where operationally feasible, and using least-privilege browsing contexts. These are only temporary risk-reduction measures; the primary mitigation is vendor patching.

Remediation

Patch, then assume compromise.

Apply Apple's fixes by upgrading to Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2, or later vendor-supplied versions that include the patch for CVE-2026-43712. Apple indicates the issue was resolved 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

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

4 SOURCESView more in app
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 activity

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

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-43712
NVD
nvd.nist.gov/vuln/detail/CVE-2026-43712
MITRE CWE · CWE-119
cwe.mitre.org