An out-of-bounds write issue was addressed with improved bounds checking. (CVE-2026-64770)
CVE-2026-64770 is a critical out-of-bounds write vulnerability affecting multiple Apple operating systems. The issue was addressed by improved bounds checking and 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, and visionOS 26.6. A remote attacker could exploit this flaw to cause unexpected application termination or heap corruption.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-64770) involves an out-of-bounds write due to insufficient bounds checking in Apple operating systems. The flaw allows a remote attacker to potentially cause application crashes or heap corruption, impacting confidentiality, integrity, and availability. The issue is fixed in specific versions of iOS, iPadOS, macOS Sequoia, macOS Sonoma, macOS Tahoe, tvOS, and visionOS by improved bounds checking.
Potential Impact
Successful exploitation can lead to unexpected application termination or heap corruption, which may result in denial of service or potentially enable further exploitation affecting system confidentiality, integrity, and availability. The CVSS score of 9.8 indicates a critical severity with network attack vector, no privileges required, and no user interaction needed.
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, and visionOS 26.6. Users and administrators should update to these versions or later to remediate this vulnerability.
An out-of-bounds write issue was addressed with improved bounds checking. (CVE-2026-64770)
Description
CVE-2026-64770 is a critical out-of-bounds write vulnerability affecting multiple Apple operating systems. The issue was addressed by improved bounds checking and 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, and visionOS 26.6. A remote attacker could exploit this flaw to cause unexpected application termination or heap corruption.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-64770) involves an out-of-bounds write due to insufficient bounds checking in Apple operating systems. The flaw allows a remote attacker to potentially cause application crashes or heap corruption, impacting confidentiality, integrity, and availability. The issue is fixed in specific versions of iOS, iPadOS, macOS Sequoia, macOS Sonoma, macOS Tahoe, tvOS, and visionOS by improved bounds checking.
Potential Impact
Successful exploitation can lead to unexpected application termination or heap corruption, which may result in denial of service or potentially enable further exploitation affecting system confidentiality, integrity, and availability. The CVSS score of 9.8 indicates a critical severity with network attack vector, no privileges required, and no user interaction needed.
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, and visionOS 26.6. Users and administrators should update to these versions or later to remediate this vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2h3r-jwvh-v42x
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64770"]
- Ecosystems
- []
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6a83aa74bf8831d539e31ede
Added to database: 08/18/2026, 00:42:28 UTC
Last enriched: 08/18/2026, 01:11:34 UTC
Last updated: 08/18/2026, 01:53:13 UTC
Views: 3
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