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CVE-2025-31277 is a WebKit memory corruption vulnerability affecting Safari and multiple Apple operating systems, including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS, as well as WebKitGTK and WPE WebKit prior to 2.50.0. The flaw is triggered when the target processes maliciously crafted web content. Apple states the issue was addressed through improved memory handling. Additional reporting associates the vulnerability with JavaScriptCore and describes it as a JIT optimization or type confusion issue used for renderer-level code execution in Safari on affected iOS versions prior to 18.6, but the precise vulnerable function is not available from the provided information.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
41 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
One of six CVEs in the DarkSword iOS exploit chain affecting older iOS 18 devices and tracked by CISA as actively exploited.
One of six vulnerabilities leveraged by the DarkSword exploit kit targeting iPhones and iPads running iOS 18.x; significant because DarkSword is described as actively exploited and broadly deployed.
One of six iOS vulnerabilities used by the DarkSword exploit kit to target iPhones running iOS 18.4 through 18.7; Apple shipped fixes in security updates and later expanded iOS 18.7.7 availability to protect more devices.
A JavaScriptCore memory corruption vulnerability used to achieve code execution inside Safari's renderer as part of the DarkSword iOS exploit chain.
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.