CVE-2026-43802: An app may be able to cause unexpected system termination in Apple iOS and iPadOS
An out-of-bounds write issue 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 (CVE-2026-43802) is an out-of-bounds write in Apple macOS that may allow an application to cause unexpected system termination. The issue is related to improper bounds checking, classified under CWE-787. Apple fixed the vulnerability in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. The CVSS v3.1 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
An attacker can exploit this vulnerability remotely without privileges or user interaction to cause unexpected system termination, resulting in denial of service and potential compromise of system confidentiality and integrity.
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. No additional mitigation guidance is provided.
CVE-2026-43802: An app may be able to cause unexpected system termination in Apple iOS and iPadOS
Description
An out-of-bounds write issue 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 (CVE-2026-43802) is an out-of-bounds write in Apple macOS that may allow an application to cause unexpected system termination. The issue is related to improper bounds checking, classified under CWE-787. Apple fixed the vulnerability in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. The CVSS v3.1 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
An attacker can exploit this vulnerability remotely without privileges or user interaction to cause unexpected system termination, resulting in denial of service and potential compromise of system confidentiality and integrity.
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. No additional mitigation guidance is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:27.820Z
- State
- PUBLISHED
Threat ID: 6a67c1bb9c2644c7f8cb114f
Added to database: 07/27/2026, 20:38:19 UTC
Last enriched: 07/29/2026, 23:54:15 UTC
Last updated: 09/11/2026, 19:31:55 UTC
Views: 65
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