EUVD-2026-40214
GHSA-3pf9-4p9r-8vcp
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Network delivery via web content with mandatory user interaction; crash limited to browser process with no confidentiality or integrity impact and no scope change.
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 process crash.
AnalysisAI
Processing maliciously crafted web content in Apple Safari, iOS/iPadOS, and macOS Tahoe (all versions prior to 26.5.2) triggers an improper memory handling flaw (CWE-119 buffer overflow) in the web content processing pipeline, resulting in an unexpected process crash. The attack vector is network-based requiring user interaction (UI:R per CVSS), and impact is confined to availability - no confidentiality or integrity compromise is described. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target user to actively load attacker-controlled web content - via a clicked link, redirect, or embedded iframe - making user interaction (UI:R) the primary limiting factor. … 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:N/I:N/A:H) scores 6.5 (Medium), accurately reflecting the constrained impact: the only confirmed effect is a process crash, with no data theft or code execution indicated by current disclosure. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a web page or embeds malicious content (e.g., via a malicious advertisement or iframe) designed to trigger the WebKit memory handling flaw. A user on an unpatched Apple device clicks a phishing link or visits a compromised site, causing the browser's web content process to crash unexpectedly and rendering the browser unusable until restarted. … |
| Remediation | Apply the vendor-released patches immediately: update to Safari 26.5.2, iOS 26.5.2 / iPadOS 26.5.2, and macOS Tahoe 26.5.2 via Apple Software Update (Settings > General > Software Update on iOS/iPadOS; System Settings > General > Software Update on macOS). … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Ios And Ipados
View allKernel memory corruption in Apple iOS/iPadOS (before 26.5.2) and macOS Tahoe (before 26.5.2) allows a malicious or compr
Memory corruption in Apple's WebKit browser engine (Safari and the system WebView on iOS, iPadOS, and macOS before 26.5.
Memory corruption via type confusion in Apple's WebKit browser engine allows attackers to corrupt memory by luring a vic
Memory corruption via use-after-free in Apple's WebKit browser engine allows remote attackers to corrupt memory when a v
Memory-corruption crash in Apple's WebKit web-content engine lets a malicious website terminate the content-rendering pr
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and
Use-after-free in WebKit allows remote attackers to trigger Safari crashes and potentially achieve arbitrary code execut
The 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
Content Security Policy bypass in Apple's WebKit-based platforms (iOS, iPadOS, macOS Tahoe, tvOS, visionOS, watchOS) all
Local privilege escalation and kernel memory corruption in Apple iOS, iPadOS (before 26.5.2) and macOS Tahoe (before 26.
Memory corruption in WebKit across Apple's ecosystem enables confidentiality breach via malicious web content without us
Information disclosure in Apple WebKit's web content processing engine allows remote attackers to read sensitive memory
Same weakness CWE-119 – Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today