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CVE-2023-43000 is a use-after-free vulnerability in WebKit, the browser engine used by Safari and other Apple applications that render web content. The flaw stems from improper object lifetime handling that can leave freed memory referenced during web content processing, resulting in memory corruption. Apple stated that the issue was addressed through improved memory management. The vulnerability affects versions prior to macOS Ventura 13.5, iOS 16.6, iPadOS 16.6, Safari 16.6, and was later backported to older supported releases including iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content can trigger the condition, and available reporting associates the flaw with WebKit-based exploit chains used for initial browser compromise.
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What an attacker gets, and what they’ve been doing with it.
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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.
52 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Coruna exploit chain vulnerability targeting iOS 16.2–16.5 and fixed in iOS 16.6.
A WebKit JIT type confusion vulnerability used in Coruna Stage 1 to achieve initial code execution in the browser renderer on iOS 16.2-16.5.1.
A WebContent read/write exploit component in the Coruna exploit kit for iOS devices.
A security flaw for which Apple expanded patches; the flaw was weaponized as part of the Coruna exploit kit.
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.