CVE-2026-43757: An app may be able to cause unexpected system termination in Apple iOS and iPadOS
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds read in Apple macOS that may be exploited by an application to cause unexpected system termination. The flaw is related to improper bounds checking (CWE-125). Apple has fixed the issue in specific macOS versions: Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The CVSS 3.1 base score is 9.8, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can lead to unexpected system termination, causing denial of service and potential disruption of system availability. The CVSS score of 9.8 indicates critical impact affecting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
A fix is available in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Users and administrators should update to these versions or later to remediate the vulnerability. Patch status is confirmed by the vendor advisory indicating these versions contain the fix.
CVE-2026-43757: An app may be able to cause unexpected system termination in Apple iOS and iPadOS
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
CVSS v3.1
Score 9.8critical
Affected software
Apple
iOS and iPadOS
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds read in Apple macOS that may be exploited by an application to cause unexpected system termination. The flaw is related to improper bounds checking (CWE-125). Apple has fixed the issue in specific macOS versions: Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The CVSS 3.1 base score is 9.8, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can lead to unexpected system termination, causing denial of service and potential disruption of system availability. The CVSS score of 9.8 indicates critical impact affecting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
A fix is available in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Users and administrators should update to these versions or later to remediate the vulnerability. Patch status is confirmed by the vendor advisory indicating these versions contain the fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:27.816Z
- State
- PUBLISHED
Threat ID: 6a67c1b79c2644c7f8cb0ee3
Added to database: 07/27/2026, 20:38:15 UTC
Last enriched: 07/29/2026, 23:53:14 UTC
Last updated: 09/11/2026, 07:31:53 UTC
Views: 81
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