CVE-2026-43731: Processing maliciously crafted web content may lead to memory corruption 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 memory corruption.
AI Analysis
Technical Summary
This vulnerability is a use-after-free (CWE-416) issue in Apple Safari that occurs when processing specially crafted web content, potentially causing memory corruption. The flaw was fixed by Apple in Safari 26.5.2 and equivalent OS versions (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6) through improved memory management. The CVSS 3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. No vendor advisory or patch links were provided, but the fix is included in the stated version updates.
Potential Impact
Successful exploitation of this use-after-free vulnerability could lead to memory corruption, allowing an attacker to execute arbitrary code, cause denial of service, or compromise system integrity. The CVSS vector indicates the attack can be performed remotely over the network without privileges but requires user interaction. Confidentiality, integrity, and availability impacts are all rated high.
Mitigation Recommendations
A fix is available in Safari 26.5.2 and corresponding Apple OS updates (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 browsers and operating systems to these versions or later to remediate this vulnerability. No additional mitigation guidance is provided by the vendor advisory.
CVE-2026-43731: Processing maliciously crafted web content may lead to memory corruption 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 memory corruption.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a use-after-free (CWE-416) issue in Apple Safari that occurs when processing specially crafted web content, potentially causing memory corruption. The flaw was fixed by Apple in Safari 26.5.2 and equivalent OS versions (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6) through improved memory management. The CVSS 3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. No vendor advisory or patch links were provided, but the fix is included in the stated version updates.
Potential Impact
Successful exploitation of this use-after-free vulnerability could lead to memory corruption, allowing an attacker to execute arbitrary code, cause denial of service, or compromise system integrity. The CVSS vector indicates the attack can be performed remotely over the network without privileges but requires user interaction. Confidentiality, integrity, and availability impacts are all rated high.
Mitigation Recommendations
A fix is available in Safari 26.5.2 and corresponding Apple OS updates (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 browsers and operating systems to these versions or later to remediate this vulnerability. No additional mitigation guidance is provided by the vendor advisory.
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: 6a42d3d427e9c7971972d14e
Added to database: 06/29/2026, 20:21:40 UTC
Last enriched: 07/30/2026, 00:57:20 UTC
Last updated: 08/13/2026, 12:41:10 UTC
Views: 80
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