A use after free issue was addressed with improved memory management. (CVE-2026-43778)
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to cause unexpected system termination or corrupt kernel memory.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-43778) is a use-after-free issue categorized under CWE-416. It allows an unprivileged application to potentially cause unexpected system termination or kernel memory corruption due to improper memory management. The vulnerability affects multiple Apple operating systems and has been fixed in the specified versions by improving memory management. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, and high impact on confidentiality, integrity, and availability.
Potential Impact
An attacker with the ability to run an application on the affected systems could exploit this use-after-free vulnerability to cause system crashes or corrupt kernel memory, potentially leading to denial of service or further compromise of system integrity and confidentiality.
Mitigation Recommendations
A fix is available and has been released in iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, and watchOS 26.6. Users and administrators should update to these versions to remediate the vulnerability.
A use after free issue was addressed with improved memory management. (CVE-2026-43778)
Description
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to cause unexpected system termination or corrupt kernel memory.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43778) is a use-after-free issue categorized under CWE-416. It allows an unprivileged application to potentially cause unexpected system termination or kernel memory corruption due to improper memory management. The vulnerability affects multiple Apple operating systems and has been fixed in the specified versions by improving memory management. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, and high impact on confidentiality, integrity, and availability.
Potential Impact
An attacker with the ability to run an application on the affected systems could exploit this use-after-free vulnerability to cause system crashes or corrupt kernel memory, potentially leading to denial of service or further compromise of system integrity and confidentiality.
Mitigation Recommendations
A fix is available and has been released in iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, and watchOS 26.6. Users and administrators should update to these versions to remediate the vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5qvw-29h6-3wc9
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-43778"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a6941fe9c2644c7f86cddc2
Added to database: 07/28/2026, 23:57:50 UTC
Last enriched: 07/29/2026, 11:08:03 UTC
Last updated: 09/12/2026, 10:01:31 UTC
Views: 107
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