CVE-2026-43727: 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 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in Apple Safari that can be triggered by processing specially crafted web content, leading to an unexpected crash of the browser. The underlying cause was improper memory management. Apple fixed this issue in Safari 26.5.2 and corresponding OS versions by improving memory handling to prevent the use-after-free scenario.
Potential Impact
Exploitation of this vulnerability may cause Safari to crash unexpectedly, disrupting user browsing sessions. There is no information about code execution or data compromise. No known exploits are reported in the wild.
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-2026-43727: 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 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected Safari 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 that can be triggered by processing specially crafted web content, leading to an unexpected crash of the browser. The underlying cause was improper memory management. Apple fixed this issue in Safari 26.5.2 and corresponding OS versions by improving memory handling to prevent the use-after-free scenario.
Potential Impact
Exploitation of this vulnerability may cause Safari to crash unexpectedly, disrupting user browsing sessions. There is no information about code execution or data compromise. No known exploits are reported in the wild.
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
- 2026-05-01T22:46:21.645Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d427e9c7971972d149
Added to database: 06/29/2026, 20:21:40 UTC
Last enriched: 06/29/2026, 20:37:17 UTC
Last updated: 06/29/2026, 22:06:43 UTC
Views: 2
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