EUVD-2026-40205
GHSA-7gjf-r94h-p24f
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Network-reachable via web page visit with no privileges required; user must actively browse to content; impact is crash only, with no confidentiality or integrity compromise 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
A use-after-free issue was addressed with improved memory management. 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
Use-after-free in Safari's web content processing engine causes denial of service across Apple platforms, affecting Safari, iOS/iPadOS, and macOS prior to the 26.5.2 release line. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) confirms remote, unauthenticated triggering requiring only that a user visit attacker-controlled web content, with impact limited to availability - specifically an unexpected Safari crash. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must actively visit or be redirected to a maliciously crafted web page using Safari on an unpatched Apple device - this is confirmed by UI:R in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 6.5 (Medium) reflects the network-reachable, zero-privilege attack vector offset by mandatory user interaction (UI:R) and the scope-unchanged, availability-only impact (C:N/I:N/A:H). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious webpage embedding content designed to trigger the use-after-free in WebKit's processing pipeline - for example, a specially structured HTML/JS payload that manipulates object lifecycle to cause a freed object to be dereferenced. A victim is directed to this page via a phishing link or a compromised advertisement, and upon Safari loading the content, the browser crashes. … |
| Remediation | The primary fix is to apply the vendor-released patches: upgrade to Safari 26.5.2, iOS and iPadOS 26.5.2, or macOS Tahoe 26.5.2, as documented in Apple's security advisories at https://support.apple.com/en-us/127594 (macOS), https://support.apple.com/en-us/127595 (Safari), and https://support.apple.com/en-us/127685 (iOS/iPadOS). … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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