CVE-2026-65390: Processing maliciously crafted web content may lead to memory corruption in Apple Safari
An integer overflow vulnerability in Apple Safari was addressed by improved input validation. Processing maliciously crafted web content could lead to memory corruption. The issue is fixed in Safari 26.6.1, iOS 26.6.1, iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, and watchOS 27.
AI Analysis
Technical Summary
CVE-2026-65390 is an integer overflow vulnerability in Apple Safari that could cause memory corruption when processing maliciously crafted web content. Apple fixed this issue by improving input validation. The fix is included in Safari 26.6.1 and corresponding OS versions: iOS 26.6.1, iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, and watchOS 27.
Potential Impact
Successful exploitation of this vulnerability may lead to memory corruption, which could potentially be leveraged for arbitrary code execution or other memory-related attacks. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Apply the official fixes by updating Safari to version 26.6.1 or later and updating the respective Apple operating systems to the specified versions or later. These updates contain improved input validation that addresses the integer overflow vulnerability.
CVE-2026-65390: Processing maliciously crafted web content may lead to memory corruption in Apple Safari
Description
An integer overflow vulnerability in Apple Safari was addressed by improved input validation. Processing maliciously crafted web content could lead to memory corruption. The issue is fixed in Safari 26.6.1, iOS 26.6.1, iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, and watchOS 27.
Affected software
Apple
Safari
Apple
iOS and iPadOS
Apple
macOS
Apple
tvOS
Apple
visionOS
Apple
watchOS
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-65390 is an integer overflow vulnerability in Apple Safari that could cause memory corruption when processing maliciously crafted web content. Apple fixed this issue by improving input validation. The fix is included in Safari 26.6.1 and corresponding OS versions: iOS 26.6.1, iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, and watchOS 27.
Potential Impact
Successful exploitation of this vulnerability may lead to memory corruption, which could potentially be leveraged for arbitrary code execution or other memory-related attacks. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Apply the official fixes by updating Safari to version 26.6.1 or later and updating the respective Apple operating systems to the specified versions or later. These updates contain improved input validation that addresses the integer overflow vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-07-22T00:46:44.572Z
- State
- PUBLISHED
Threat ID: 6aa860fd55bf5e2cf59d257c
Added to database: 09/14/2026, 21:02:53 UTC
Last enriched: 09/14/2026, 22:27:41 UTC
Last updated: 09/15/2026, 03:01:22 UTC
Views: 3
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