An integer overflow was addressed with improved input validation. (CVE-2026-64766)
CVE-2026-64766 is a high severity integer overflow vulnerability affecting multiple Apple operating systems. The flaw could be triggered by processing a maliciously crafted file, potentially leading to unexpected application termination or arbitrary code execution. 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, visionOS 26.6, and watchOS 26.6.
AI Analysis
Technical Summary
This vulnerability involves an integer overflow caused by insufficient input validation in Apple operating systems. Exploiting this flaw by processing a specially crafted file may result in unexpected app termination or arbitrary code execution. The vulnerability is identified as CWE-190 and carries a CVSS 3.1 score of 7.8, indicating high impact on confidentiality, integrity, and availability. Official patches have been released in the specified OS versions to remediate the issue.
Potential Impact
Successful exploitation can lead to arbitrary code execution with user-level privileges, potentially compromising confidentiality, integrity, and availability of affected systems. The vulnerability requires local access (AV:L) and user interaction (UI:R) but does not require privileges (PR:N).
Mitigation Recommendations
The vulnerability 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. Users and administrators should apply these official updates to remediate the issue. No additional mitigations are indicated by the vendor advisory.
An integer overflow was addressed with improved input validation. (CVE-2026-64766)
Description
CVE-2026-64766 is a high severity integer overflow vulnerability affecting multiple Apple operating systems. The flaw could be triggered by processing a maliciously crafted file, potentially leading to unexpected application termination or arbitrary code execution. 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, visionOS 26.6, and watchOS 26.6.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer overflow caused by insufficient input validation in Apple operating systems. Exploiting this flaw by processing a specially crafted file may result in unexpected app termination or arbitrary code execution. The vulnerability is identified as CWE-190 and carries a CVSS 3.1 score of 7.8, indicating high impact on confidentiality, integrity, and availability. Official patches have been released in the specified OS versions to remediate the issue.
Potential Impact
Successful exploitation can lead to arbitrary code execution with user-level privileges, potentially compromising confidentiality, integrity, and availability of affected systems. The vulnerability requires local access (AV:L) and user interaction (UI:R) but does not require privileges (PR:N).
Mitigation Recommendations
The vulnerability 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. Users and administrators should apply these official updates to remediate the issue. No additional mitigations are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-j475-2rj7-69hc
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64766"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a83aa73bf8831d539e31d12
Added to database: 08/18/2026, 00:42:27 UTC
Last enriched: 08/18/2026, 01:11:50 UTC
Last updated: 08/18/2026, 01:53:25 UTC
Views: 3
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