EUVD-2026-40188
GHSA-gcg2-qvp9-rg56
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Network-delivered via web content (AV:N), no privileges needed (PR:N), user must visit malicious page (UI:R), impact is crash-only with no confidentiality or integrity loss (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 stack overflow was addressed with improved input validation. 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
Stack-based buffer overflow in Apple Safari's web content processing engine causes an unexpected application crash across Safari, iOS/iPadOS, and macOS Tahoe platforms. All versions prior to 26.5.2 are affected; an attacker can trigger the overflow by luring a victim to a maliciously crafted web page, resulting in a denial-of-service through a Safari crash. …
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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 in Safari - this corresponds to CVSS UI:R (required user interaction), meaning the victim must visit or open an attacker-controlled page or resource. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) yields a Medium score of 6.5. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts a web page containing specially crafted content designed to trigger the stack overflow in Safari's input parsing logic. A victim on an unpatched Apple device visits the page - via a phishing link, malvertising redirect, or embedded iframe - causing Safari to process the malicious content, exhaust the stack buffer, and crash. … |
| Remediation | Upgrade to the vendor-released patched versions: Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, or macOS Tahoe 26.5.2. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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