CVE-2026-43734: Processing maliciously crafted web content may lead to an unexpected process crash in Apple Safari
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.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in Apple Safari's web content processing. When maliciously crafted web content is processed, it may trigger an unexpected crash of the Safari process. Apple fixed this issue by improving memory management in Safari version 26.5.2 and corresponding OS versions (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2). No CVSS score is provided, and no known exploits in the wild have been reported.
Potential Impact
The vulnerability can lead to an unexpected process crash of Safari when processing specially crafted web content. There is no indication of code execution or data compromise from the provided information. The impact is limited to denial of service via process crash.
Mitigation Recommendations
A fix is available in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Users and administrators should update to these versions or later to remediate the vulnerability.
CVE-2026-43734: Processing maliciously crafted web content may lead to an unexpected process crash in Apple Safari
Description
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.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in Apple Safari's web content processing. When maliciously crafted web content is processed, it may trigger an unexpected crash of the Safari process. Apple fixed this issue by improving memory management in Safari version 26.5.2 and corresponding OS versions (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2). No CVSS score is provided, and no known exploits in the wild have been reported.
Potential Impact
The vulnerability can lead to an unexpected process crash of Safari when processing specially crafted web content. There is no indication of code execution or data compromise from the provided information. The impact is limited to denial of service via process crash.
Mitigation Recommendations
A fix is available in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Users and administrators should update to these versions or later to remediate the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.646Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d427e9c7971972d158
Added to database: 06/29/2026, 20:21:40 UTC
Last enriched: 06/29/2026, 20:37:06 UTC
Last updated: 06/29/2026, 22:06:43 UTC
Views: 2
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