CVE-2026-43704: A malicious web extension may be able to cause 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. A malicious web extension may be able to cause an unexpected process crash.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free flaw in Apple Safari that may be triggered by a malicious web extension, resulting in an unexpected process crash. The issue was resolved by Apple through improved memory management in Safari version 26.5.2 and corresponding OS versions. No CVSS score is provided, and no known exploits in the wild have been reported.
Potential Impact
A malicious web extension exploiting this use-after-free vulnerability could cause Safari to crash unexpectedly. This may disrupt user activity but does not explicitly indicate further compromise or data loss based on the available information.
Mitigation Recommendations
The vulnerability is fixed 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 issue.
CVE-2026-43704: A malicious web extension may be able to cause 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. A malicious web extension may be able to cause an unexpected process crash.
CVSS v3.1
Score 5.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free flaw in Apple Safari that may be triggered by a malicious web extension, resulting in an unexpected process crash. The issue was resolved by Apple through improved memory management in Safari version 26.5.2 and corresponding OS versions. No CVSS score is provided, and no known exploits in the wild have been reported.
Potential Impact
A malicious web extension exploiting this use-after-free vulnerability could cause Safari to crash unexpectedly. This may disrupt user activity but does not explicitly indicate further compromise or data loss based on the available information.
Mitigation Recommendations
The vulnerability is fixed 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 issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.643Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d227e9c7971972cee6
Added to database: 06/29/2026, 20:21:38 UTC
Last enriched: 06/29/2026, 20:51:44 UTC
Last updated: 06/29/2026, 22:06:43 UTC
Views: 2
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