EUVD-2026-40218
GHSA-qr57-p9qq-f4x8
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Web-delivered content requires no credentials but demands user navigation (UI:R); impact is crash-only with no confidentiality or integrity consequence confirmed.
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
The issue was addressed with improved memory handling. 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 Safari crash.
AnalysisAI
Memory corruption (CWE-119) in Apple Safari's web content processing engine causes an unexpected application crash when rendering maliciously crafted web content. Affected across Safari, iOS 26, iPadOS 26, and macOS Tahoe - all versions prior to 26.5.2. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must actively process maliciously crafted web content using an affected version of Safari - this typically means navigating to a hostile URL or opening a crafted file that Safari renders. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 6.5 (Medium) is internally consistent: AV:N reflects that a hostile web page can reach any Safari user over the network, AC:L confirms no special conditions are required, PR:N indicates no credentials are needed, but UI:R correctly captures that the victim must navigate to or open the crafted content. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers or compromises a website and embeds maliciously crafted HTML or media content designed to trigger a buffer boundary violation in Safari's web content renderer. A target user visits the page - via a phishing link, malvertising redirect, or social engineering - and Safari processes the content, triggering the memory handling flaw and causing the browser to crash. … |
| Remediation | Vendor-released patch: Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-119 – Buffer Overflow
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External POC / Exploit Code
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