EUVD-2026-40197
GHSA-pxxj-mgr3-jp7c
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Web-delivered so AV:N/AC:L/PR:N, but the victim must open malicious content so UI:R; renderer memory corruption yields high C/I/A within an unchanged scope.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
5DescriptionCVE.org
A type confusion issue was addressed with improved checks. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to memory corruption.
AnalysisAI
Memory corruption via type confusion in Apple's WebKit browser engine allows attackers to corrupt memory by luring a victim to maliciously crafted web content, affecting Safari, iOS/iPadOS, and macOS before version 26.5.2. The flaw (CWE-843) is network-reachable but requires user interaction (visiting a page), and no public exploit has been identified at time of analysis. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to process attacker-controlled web content - i.e., to open or be served a maliciously crafted page in Safari or any WebKit-rendering surface (WKWebView, in-app browsers, content previews) on an unpatched device running a version before 26.5.2. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, score 8.8) indicates a network-reachable, low-complexity, unauthenticated bug whose only gating factor is user interaction - the victim must open attacker-controlled web content. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts a malicious web page containing crafted JavaScript or DOM structures that trigger the WebKit type confusion, then lures a victim via phishing, a malvertising frame, or a compromised legitimate site. When the victim opens the page in Safari or any WebKit-backed view on an unpatched device, the type confusion corrupts memory to gain an out-of-bounds read/write primitive, typically the first stage toward code execution within the renderer. … |
| Remediation | Vendor-released patch: update to Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2, which Apple states address the issue with improved type checks; this is the primary and complete fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Issue urgent patching directive to all device management teams. …
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External POC / Exploit Code
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