EUVD-2026-40185
GHSA-8w92-3v43-q4p8
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Web-delivered attack requires no attacker privileges; user must open malicious content; confirmed impact is process crash only, no confidentiality or integrity effect.
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 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
Out-of-bounds read in Apple's web content processing engine crashes the rendering process across iOS, iPadOS, and macOS Tahoe when a user visits or opens maliciously crafted web content. All iOS and iPadOS versions prior to 26.5.2 and macOS Tahoe versions prior to 26.5.2 are affected per EUVD-2026-40185 and Apple's own advisories. …
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 | The victim must actively process malicious web content - by opening a crafted URL in Safari or any WebKit-based browser, loading a web view within an application, or rendering remote HTML content. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 (Medium) reflects a network-reachable, low-complexity attack (AV:N/AC:L) requiring no attacker privileges (PR:N) but requiring user interaction (UI:R), with unchanged scope (S:U) and impact confined entirely to availability (A:H, C:N, I:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a webpage containing malicious HTML, JavaScript, or media content that triggers the out-of-bounds read in Apple's web processing engine, then delivers a link to the page via phishing email, malicious advertisement, or redirect chain. A victim on an unpatched iOS, iPadOS, or macOS device who opens the link causes the browser or in-app web view to crash, resulting in a denial-of-service condition. … |
| Remediation | The definitive fix is to update to iOS 26.5.2, iPadOS 26.5.2, or macOS Tahoe 26.5.2, as released by Apple and confirmed in the vendor advisories at https://support.apple.com/en-us/127594 and https://support.apple.com/en-us/127595. … 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-125 – Out-of-bounds Read
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today