CVE-2026-65391: Processing maliciously crafted web content may lead to memory corruption in Apple Safari
CVE-2026-65391 is a memory corruption vulnerability in Apple Safari caused by an out-of-bounds write due to insufficient bounds checking when processing maliciously crafted web content. This issue has been addressed with improved bounds checking and fixed in Safari 26.6.1 and related OS versions. Exploitation could lead to memory corruption, but no known exploits are reported in the wild.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds write in Apple Safari triggered by processing maliciously crafted web content. The root cause was insufficient bounds checking, which could lead to memory corruption. Apple fixed the issue by improving bounds checking 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. No CVSS score is provided, and no known exploits have been reported.
Potential Impact
Successful exploitation may lead to memory corruption in Safari, which could potentially be leveraged for arbitrary code execution or browser instability. However, no active exploitation is currently known.
Mitigation Recommendations
Apply the official fixes by updating Safari to version 26.6.1 or later and the corresponding OS versions (iOS 26.6.1, iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27). These updates include improved bounds checking that resolves the vulnerability.
CVE-2026-65391: Processing maliciously crafted web content may lead to memory corruption in Apple Safari
Description
CVE-2026-65391 is a memory corruption vulnerability in Apple Safari caused by an out-of-bounds write due to insufficient bounds checking when processing maliciously crafted web content. This issue has been addressed with improved bounds checking and fixed in Safari 26.6.1 and related OS versions. Exploitation could lead to memory corruption, but no known exploits are reported in the wild.
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
This vulnerability involves an out-of-bounds write in Apple Safari triggered by processing maliciously crafted web content. The root cause was insufficient bounds checking, which could lead to memory corruption. Apple fixed the issue by improving bounds checking 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. No CVSS score is provided, and no known exploits have been reported.
Potential Impact
Successful exploitation may lead to memory corruption in Safari, which could potentially be leveraged for arbitrary code execution or browser instability. However, no active exploitation is currently known.
Mitigation Recommendations
Apply the official fixes by updating Safari to version 26.6.1 or later and the corresponding OS versions (iOS 26.6.1, iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27). These updates include improved bounds checking that resolves the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-07-22T00:46:44.573Z
- State
- PUBLISHED
Threat ID: 6aa860fd55bf5e2cf59d257d
Added to database: 09/14/2026, 21:02:53 UTC
Last enriched: 09/14/2026, 22:27:50 UTC
Last updated: 09/15/2026, 05:01:22 UTC
Views: 3
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