EUVD-2026-40184
GHSA-vjvw-hpgr-cw8j
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack is network-delivered via crafted web content (AV:N, AC:L), requires no attacker privileges (PR:N), demands user page visit (UI:R), and results only in a process crash with no confidentiality or integrity impact (C:N/I:N/A:H).
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Lifecycle Timeline
5DescriptionCVE.org
A use-after-free issue was addressed with improved memory management. 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 an unexpected process crash.
AnalysisAI
Use-after-free memory corruption in Apple's WebKit rendering engine causes unexpected process crashes when processing maliciously crafted web content across Safari, iOS/iPadOS, and macOS Tahoe. All three platform variants prior to the 26.5.2 release train are affected, covering a substantial portion of Apple's consumer and enterprise device fleet. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must visit a maliciously crafted webpage using Safari or a WebKit-based browser/WebView on an affected Apple platform running Safari prior to 26.5.2, iOS/iPadOS prior to 26.5.2, or macOS Tahoe prior to 26.5.2. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 6.5 (Medium) is supported by the vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H: the attack is network-delivered with low complexity and no required privileges, but demands user interaction (visiting a malicious page) and yields only an availability impact - a process crash - with no confidentiality or integrity compromise. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker constructs a webpage embedding maliciously crafted HTML, CSS, or JavaScript designed to trigger a use-after-free condition in WebKit's memory management during content parsing or rendering. A target user on an unpatched Apple device visits the URL - via a phishing link, malicious ad, or compromised site - causing the Safari (or in-app WebView) process to crash unexpectedly. … |
| Remediation | The primary fix is to update to Safari 26.5.2, iOS and iPadOS 26.5.2, or macOS Tahoe 26.5.2, all of which contain Apple's memory management correction for this flaw. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-416 – Use After Free
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External POC / Exploit Code
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