EUVD-2026-40193
GHSA-jrqp-jj3r-gr59
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Network-reachable via crafted web page, no privileges needed, user must visit page (UI:R), crash-only impact maps to A:H with no C or I impact 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
An out-of-bounds access issue was addressed with improved bounds checking. 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
Out-of-bounds read in Safari's web content processing engine causes an unexpected application crash when rendering maliciously crafted web content. Affected are Safari prior to 26.5.2, iOS and iPadOS prior to 26.5.2, and macOS Tahoe prior to 26.5.2. …
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 user must actively navigate to or be redirected to a page serving maliciously crafted web content - this is the UI:R (user interaction required) constraint in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) accurately captures a network-reachable, low-complexity, unauthenticated denial-of-service triggered by user interaction. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts a web page containing maliciously crafted content - such as a specially structured HTML/CSS/JS payload - designed to trigger the out-of-bounds read in Safari's web content parser. When a user navigates to this page, Safari processes the content, the bounds check fails, the OOB read occurs, and Safari crashes. … |
| Remediation | Vendor-released patch: Safari 26.5.2, iOS and iPadOS 26.5.2, macOS Tahoe 26.5.2. … 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