An out-of-bounds write issue was addressed with improved bounds checking. (CVE-2026-64739)
An out-of-bounds write issue was addressed with improved bounds checking. 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 attacker may be able to cause unexpected app termination.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds write condition (CWE-787) that was mitigated by enhanced bounds checking in Apple operating systems. The flaw could be exploited to cause unexpected termination of applications. The issue is fixed 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. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality, integrity, and availability impacts.
Potential Impact
An attacker may cause unexpected termination of applications, potentially leading to denial of service or disruption of normal operations. The CVSS vector indicates high impact on confidentiality, integrity, and availability, but no known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available and has been applied 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.
An out-of-bounds write issue was addressed with improved bounds checking. (CVE-2026-64739)
Description
An out-of-bounds write issue was addressed with improved bounds checking. 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 attacker may be able to cause unexpected app termination.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds write condition (CWE-787) that was mitigated by enhanced bounds checking in Apple operating systems. The flaw could be exploited to cause unexpected termination of applications. The issue is fixed 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. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality, integrity, and availability impacts.
Potential Impact
An attacker may cause unexpected termination of applications, potentially leading to denial of service or disruption of normal operations. The CVSS vector indicates high impact on confidentiality, integrity, and availability, but no known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available and has been applied 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-37v7-fcj8-25rq
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64739"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a6941f59c2644c7f86cc1fe
Added to database: 07/28/2026, 23:57:41 UTC
Last enriched: 07/29/2026, 11:11:01 UTC
Last updated: 09/11/2026, 07:31:54 UTC
Views: 86
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