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CVE-2026-43709 is a use-after-free vulnerability in WebKit affecting Apple Safari, iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS. The flaw is triggered when the WebKit engine processes maliciously crafted web content, causing memory to be accessed after it has been freed. Apple states the issue was addressed through improved memory management. The documented impact is an unexpected process crash during web content handling.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A WebKit vulnerability where processing maliciously crafted web content may lead to an unexpected process crash.
A use-after-free vulnerability in web content processing that could cause an unexpected process crash.
A macOS Tahoe web content processing vulnerability involving use-after-free that may cause an unexpected process crash.
A vulnerability in Apple web content handling acknowledged in the advisory, but no specific technical description is provided in the extracted content.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.