EUVD-2026-40189
GHSA-44fm-8753-g4f8
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Network-delivered via webpage (AV:N), trivial delivery (AC:L), no privileges required (PR:N), user must visit page (UI:R), impact is process crash only with 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
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 process crash.
AnalysisAI
Use-after-free memory corruption in Safari's web content processing engine causes an unexpected process crash when rendering maliciously crafted web pages. Affected products include Safari, iOS and iPadOS, and macOS Tahoe, all prior to version 26.5.2. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to actively visit or be redirected to a maliciously crafted webpage, consistent with the CVSS UI:R (user interaction required) metric. … 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), reflecting a network-exploitable denial-of-service that requires only user interaction - no privileges, no special configuration. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker creates a webpage containing specially crafted HTML, JavaScript, or media content that triggers a use-after-free condition in WebKit's memory management during parsing or rendering. The attacker hosts this page or injects it via an ad network or compromised site, then lures the target user to visit it - causing Safari or any WKWebView-based browser to crash. … |
| Remediation | The primary fix is to update to the patched releases: Safari 26.5.2, iOS and iPadOS 26.5.2, or macOS Tahoe 26.5.2, available via Apple Software Update. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-416 – Use After Free
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External POC / Exploit Code
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