CVE-2026-43740: Processing maliciously crafted web content may result in the disclosure of process memory in Apple Safari
The issue was addressed with improved memory handling. 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 result in the disclosure of process memory.
AI Analysis
Technical Summary
CVE-2026-43740 is a memory disclosure vulnerability in Apple Safari where processing specially crafted web content can result in exposure of process memory. Apple fixed this issue by improving memory handling in Safari 26.5.2 and corresponding OS versions (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2). The vulnerability was publicly disclosed without an assigned CVSS score or detailed exploitation information.
Potential Impact
Successful exploitation could lead to unauthorized disclosure of process memory contents, potentially exposing sensitive information handled by the Safari process. There are no known exploits in the wild at this time.
Mitigation Recommendations
Apply the official fix by updating to Safari 26.5.2 or later, or the corresponding OS versions iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Patch status is confirmed fixed in these versions.
CVE-2026-43740: Processing maliciously crafted web content may result in the disclosure of process memory in Apple Safari
Description
The issue was addressed with improved memory handling. 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 result in the disclosure of process memory.
CVSS v3.1
Score 6.5medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43740 is a memory disclosure vulnerability in Apple Safari where processing specially crafted web content can result in exposure of process memory. Apple fixed this issue by improving memory handling in Safari 26.5.2 and corresponding OS versions (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2). The vulnerability was publicly disclosed without an assigned CVSS score or detailed exploitation information.
Potential Impact
Successful exploitation could lead to unauthorized disclosure of process memory contents, potentially exposing sensitive information handled by the Safari process. There are no known exploits in the wild at this time.
Mitigation Recommendations
Apply the official fix by updating to Safari 26.5.2 or later, or the corresponding OS versions iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Patch status is confirmed fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.647Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d427e9c7971972d162
Added to database: 06/29/2026, 20:21:40 UTC
Last enriched: 06/29/2026, 20:36:56 UTC
Last updated: 06/29/2026, 22:06:43 UTC
Views: 3
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