CVE-2026-64728: Maliciously crafted web content may violate iframe sandboxing policy in Apple Safari
A permissions issue was addressed with improved validation. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Maliciously crafted web content may violate iframe sandboxing policy.
AI Analysis
Technical Summary
CVE-2026-64728 is a vulnerability in Apple Safari where a permissions issue could allow malicious web content to bypass iframe sandboxing policies. This issue was resolved by improved validation mechanisms. The fix is included in Safari 26.6 and corresponding updates for iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS versions 26.6. The vulnerability is classified under CWE-693 (Protection Mechanism Failure).
Potential Impact
The vulnerability may allow an attacker to violate iframe sandboxing policies, potentially leading to integrity violations in the browser context. There is no impact on confidentiality or availability reported. The CVSS vector indicates the attack requires no privileges but user interaction and has low attack complexity.
Mitigation Recommendations
A fix is available in Safari 26.6 and corresponding OS updates (iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6). Users and administrators should update to these versions to remediate the vulnerability. No additional mitigations are specified.
CVE-2026-64728: Maliciously crafted web content may violate iframe sandboxing policy in Apple Safari
Description
A permissions issue was addressed with improved validation. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Maliciously crafted web content may violate iframe sandboxing policy.
CVSS v3.1
Score 6.5medium
Affected software
Apple
Safari
Apple
iOS and iPadOS
Apple
macOS
Apple
tvOS
Apple
visionOS
Apple
watchOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-64728 is a vulnerability in Apple Safari where a permissions issue could allow malicious web content to bypass iframe sandboxing policies. This issue was resolved by improved validation mechanisms. The fix is included in Safari 26.6 and corresponding updates for iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS versions 26.6. The vulnerability is classified under CWE-693 (Protection Mechanism Failure).
Potential Impact
The vulnerability may allow an attacker to violate iframe sandboxing policies, potentially leading to integrity violations in the browser context. There is no impact on confidentiality or availability reported. The CVSS vector indicates the attack requires no privileges but user interaction and has low attack complexity.
Mitigation Recommendations
A fix is available in Safari 26.6 and corresponding OS updates (iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6). Users and administrators should update to these versions to remediate the vulnerability. No additional mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-07-20T18:09:47.192Z
- State
- PUBLISHED
Threat ID: 6a67c1c39c2644c7f8cb142e
Added to database: 07/27/2026, 20:38:27 UTC
Last enriched: 07/29/2026, 23:48:50 UTC
Last updated: 09/11/2026, 22:08:24 UTC
Views: 55
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