CVE-2026-64783: Processing maliciously crafted web content may lead to an unexpected Safari crash in Apple Safari
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
AI Analysis
Technical Summary
This vulnerability is a use-after-free (CWE-416) flaw in Apple Safari that can be triggered by processing specially crafted web content, leading to an unexpected crash of the browser. The issue was resolved by Apple through improved memory management techniques. The fix is included in Safari 26.6 and related OS updates (iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6, watchOS 26.6). The CVSS v3.1 base score is 8.8, indicating a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts to confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can cause Safari to crash unexpectedly, potentially leading to denial of service and possible compromise of confidentiality and integrity due to the use-after-free memory corruption. The high CVSS score reflects the significant impact on system security and stability.
Mitigation Recommendations
A fix is available in Safari 26.6 and the corresponding OS updates (iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6, watchOS 26.6). Users and administrators should update to these versions to remediate the vulnerability. No additional mitigation guidance is provided or required beyond applying the official update.
CVE-2026-64783: Processing maliciously crafted web content may lead to an unexpected Safari crash in Apple Safari
Description
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
CVSS v3.1
Score 8.8high
Affected software
Apple
Safari
Apple
iOS and iPadOS
Apple
macOS
Apple
visionOS
Apple
watchOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a use-after-free (CWE-416) flaw in Apple Safari that can be triggered by processing specially crafted web content, leading to an unexpected crash of the browser. The issue was resolved by Apple through improved memory management techniques. The fix is included in Safari 26.6 and related OS updates (iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6, watchOS 26.6). The CVSS v3.1 base score is 8.8, indicating a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts to confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can cause Safari to crash unexpectedly, potentially leading to denial of service and possible compromise of confidentiality and integrity due to the use-after-free memory corruption. The high CVSS score reflects the significant impact on system security and stability.
Mitigation Recommendations
A fix is available in Safari 26.6 and the corresponding OS updates (iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6, watchOS 26.6). Users and administrators should update to these versions to remediate the vulnerability. No additional mitigation guidance is provided or required beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-07-20T18:11:03.397Z
- State
- PUBLISHED
Threat ID: 6a67c1c89c2644c7f8cb15e5
Added to database: 07/27/2026, 20:38:32 UTC
Last enriched: 07/29/2026, 20:22:11 UTC
Last updated: 09/10/2026, 20:01:57 UTC
Views: 83
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