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, tvOS 26.6, visionOS 26.6, watchOS 26.6. 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 that may lead to an unexpected process crash when handling specially crafted web content. The flaw was mitigated by improved memory management in Safari version 26.5.2 and related OS updates (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6). The CVSS score of 6.5 reflects a medium severity impact primarily on availability, with no confidentiality or integrity impact reported. No known exploits in the wild have been documented. The vulnerability is identified as CWE-416 (Use After Free).
Potential Impact
Successful exploitation of this vulnerability may cause Safari to crash unexpectedly, impacting availability of the browser process. There is no indication of confidentiality or integrity compromise. No known active exploits have been reported.
Mitigation Recommendations
A fix is available in Safari 26.5.2 and corresponding OS versions (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6). Users and administrators should update affected Safari versions to 26.5.2 or later to remediate this 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, tvOS 26.6, visionOS 26.6, watchOS 26.6. 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 that may lead to an unexpected process crash when handling specially crafted web content. The flaw was mitigated by improved memory management in Safari version 26.5.2 and related OS updates (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6). The CVSS score of 6.5 reflects a medium severity impact primarily on availability, with no confidentiality or integrity impact reported. No known exploits in the wild have been documented. The vulnerability is identified as CWE-416 (Use After Free).
Potential Impact
Successful exploitation of this vulnerability may cause Safari to crash unexpectedly, impacting availability of the browser process. There is no indication of confidentiality or integrity compromise. No known active exploits have been reported.
Mitigation Recommendations
A fix is available in Safari 26.5.2 and corresponding OS versions (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6). Users and administrators should update affected Safari versions to 26.5.2 or later to remediate this 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: 07/30/2026, 00:57:38 UTC
Last updated: 08/11/2026, 00:41:12 UTC
Views: 51
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