CVE-2026-28973

Integer Overflow Leading to Sandbox Breakout on Apple iOS, iPadOS, macOS, and watchOS

Published Jul 27, 2026 CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Description
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, watchOS 26.6. A malicious app may be able to break out of its sandbox.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Integer Overflow Leading to Sandbox Breakout on Apple iOS, iPadOS, macOS, and watchOS
Type Values Removed Values Added
Description An integer overflow was addressed with improved input validation. 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, watchOS 26.6. A malicious app may be able to break out of its sandbox. An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, watchOS 26.6. A malicious app may be able to break out of its sandbox.
References
Type Values Removed Values Added
Title Integer Overflow Enabling Sandbox Escape in iOS, macOS, watchOS
Type Values Removed Values Added
Title Integer Overflow Enabling Sandbox Escape in iOS, macOS, watchOS
Weaknesses CWE-190
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apple
Apple ios And Ipados
Apple macos
Apple watchos
Vendors & Products Apple
Apple ios And Ipados
Apple macos
Apple watchos
Type Values Removed Values Added
Description An integer overflow was addressed with improved input validation. 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, watchOS 26.6. A malicious app may be able to break out of its sandbox.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Aug 17, 2026, 9:30 PM
Reserved
Mar 3, 2026, 4:36 PM
Status
Modified
Published
Jul 27, 2026, 9:16 PM
Modified
Aug 17, 2026, 10:17 PM