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Use-after-free in Apple WebRTC leading to Safari crash

IdentifiersCVE-2026-43746CWE-416

CVE-2026-43746 is a use-after-free vulnerability in Apple’s WebRTC-related web content processing. Apple states that processing maliciously crafted web content may trigger the flaw and lead to an unexpected Safari crash. The issue was addressed through improved memory management and affects Safari 26.5.2 prior to patching, as well as iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2 before the fix. The available information identifies the bug class and affected component family, but does not provide the specific vulnerable function or code path.

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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 Safari to crash while processing attacker-controlled web content. Based on the provided information, the documented impact is denial of service at the browser/application level via an unexpected Safari crash. No evidence in the provided content confirms code execution, sandbox escape, or information disclosure for this specific CVE.

Mitigation

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

Until patches can be applied, reduce exposure by limiting use of untrusted web content in Safari and applications that invoke the affected web content processing path, and consider restricting access to potentially malicious websites. No vendor-specific workaround beyond installing the security updates is provided in the supplied content.

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 versions that include the patch. Apple states the issue was resolved 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.

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
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

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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 activity3

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

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-43746
NVD
nvd.nist.gov/vuln/detail/CVE-2026-43746
MITRE CWE · CWE-416
cwe.mitre.org