An integer overflow was addressed with improved input validation. (CVE-2026-64774)
CVE-2026-64774 is a critical integer overflow vulnerability affecting multiple Apple operating systems. The flaw could allow a remote attacker to cause unexpected application termination or heap corruption. The issue has been addressed with improved input validation 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.
AI Analysis
Technical Summary
This vulnerability involves an integer overflow that was mitigated by enhanced input validation in various Apple OS versions. Exploitation could lead to denial of service via application crashes or memory corruption. The CVSS v3.1 base score is 9.8, indicating critical severity with network attack vector, no privileges required, and no user interaction needed. The vulnerability is fixed in the specified OS versions.
Potential Impact
Successful exploitation may result in high impact including complete confidentiality, integrity, and availability loss due to application crashes or heap corruption. This could disrupt normal operation or potentially be leveraged for further attacks.
Mitigation Recommendations
Apply the official patches by upgrading to iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, or visionOS 26.6 as appropriate. These versions contain the fix through improved input validation. No other mitigations are indicated.
An integer overflow was addressed with improved input validation. (CVE-2026-64774)
Description
CVE-2026-64774 is a critical integer overflow vulnerability affecting multiple Apple operating systems. The flaw could allow a remote attacker to cause unexpected application termination or heap corruption. The issue has been addressed with improved input validation 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.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer overflow that was mitigated by enhanced input validation in various Apple OS versions. Exploitation could lead to denial of service via application crashes or memory corruption. The CVSS v3.1 base score is 9.8, indicating critical severity with network attack vector, no privileges required, and no user interaction needed. The vulnerability is fixed in the specified OS versions.
Potential Impact
Successful exploitation may result in high impact including complete confidentiality, integrity, and availability loss due to application crashes or heap corruption. This could disrupt normal operation or potentially be leveraged for further attacks.
Mitigation Recommendations
Apply the official patches by upgrading to iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, or visionOS 26.6 as appropriate. These versions contain the fix through improved input validation. No other mitigations are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-7xx4-m4v2-65j4
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64774"]
- Ecosystems
- []
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6a83aa73bf8831d539e31d26
Added to database: 08/18/2026, 00:42:27 UTC
Last enriched: 08/18/2026, 01:11:39 UTC
Last updated: 08/18/2026, 01:53:19 UTC
Views: 3
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