WebKit state management flaw causing process crash on malicious web content
CVE-2025-43427 is a WebKit vulnerability affecting Safari, WebKitGTK, and WPE WebKit. Apple and WebKitGTK/WPE describe the issue as a state-management flaw fixed through improved state management. Processing maliciously crafted web content can trigger the bug and lead to an unexpected process crash. Reported affected products include WebKitGTK and WPE WebKit before 2.50.2, and Apple platforms fixed in Safari 26.1, iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, and visionOS 26.1. The available public information does not identify the specific vulnerable function or code path beyond the state-management characterization.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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
If you can’t patch tonight, do this now.
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
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Web content processing issue leading to unexpected process crash.
A web content processing vulnerability associated in the advisory with unexpected process crashes on macOS Sonoma and macOS Sequoia.
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.