WebKit process crash on malicious web content in Apple Safari and Apple platforms
CVE-2026-28917 is a WebKit vulnerability affecting Safari and multiple Apple operating systems, including Safari 26.5, iOS 18.7.9, iPadOS 18.7.9, iOS 26.5, iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, and watchOS 26.5. Apple states that processing maliciously crafted web content may lead to an unexpected process crash and that the issue was addressed with improved input validation. The available product advisories consistently place the flaw in WebKit. Some mention contexts in the supplied content also describe the issue as causing an unexpected Safari crash and reference a use-after-free fixed with improved memory management, but the most consistent cross-platform description provided for this CVE is a WebKit input-validation flaw leading to a process crash when handling crafted web content.
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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.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in Apple web content processing that may cause an unexpected Safari crash via maliciously crafted web content.
A use-after-free vulnerability in Apple software for macOS Sonoma and macOS Sequoia where maliciously crafted web content may cause an unexpected Safari crash.
A WebKit vulnerability where maliciously crafted web content may cause an unexpected process crash.
A use-after-free vulnerability in macOS Tahoe triggered by maliciously crafted web content, potentially causing an unexpected Safari crash.
The version that knows your environment.
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.