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CVE-2026-28883 is a use-after-free vulnerability in WebKit. Processing maliciously crafted web content can access an object after its lifetime has ended, resulting in an unexpected process crash. The issue was addressed through improved memory management in Safari 26.5, iOS 26.5, iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, and watchOS 26.5.
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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.
22 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A data protection issue in Apple software that may allow an app to access sensitive user data.
A data protection issue in Apple software for macOS Sonoma and macOS Sequoia where an app may be able to access sensitive user data.
A WebKit vulnerability where maliciously crafted web content may cause an unexpected process crash.
A macOS Tahoe vulnerability that may allow an app to access sensitive user data.
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.