CVE-2026-28973

⚠️ high

Summary

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.

CVSS Score

8.6

High

EPSS Score

0.1

Exploit Probability

Published Date

2026-07-27

First Seen: 2026-07-31

📊 Relative Risk Intelligence

This CVE is High Risk - more severe than 80.4% of all 340,405 vulnerabilities in our database.

#66,742

Top 25% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jul 28, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Total

Complete system compromise possible

SSVC data provided by CISA

Last Modified 2026-07-28

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CWE IDs (Weakness Types)

CWE-190

📦 Affected Products 6

Vendor	Product	Status	Affected Versions
apple	iphone_os	Affected	< 26.6
apple	watchos	Affected	< 26.6
apple	ipados	Affected	< 26.6
apple	macos	Affected	> 14.0 < 14.8.8
apple	macos	Affected	> 15.0 < 15.7.8
apple	macos	Affected	> 26.0 < 26.6

🔗 References 5

https://support.apple.com/en-us/128066

Release Notes Vendor Advisory

https://support.apple.com/en-us/128067

Release Notes Vendor Advisory

https://support.apple.com/en-us/128068

Release Notes Vendor Advisory

https://support.apple.com/en-us/128071

Release Notes Vendor Advisory

https://support.apple.com/en-us/128072

Release Notes Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-28928	⛔ critical	9.8	0.4	A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.6 and iPadOS 26.6, m...	2026-07-27
CVE-2026-28931	⚠️ high	8.8	0.3	A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Ta...	2026-07-27
CVE-2026-43673	⚠️ high	7.8	0.1	The issue was addressed with improved memory handling. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15...	2026-07-27
CVE-2026-43711	⚠️ high	7.8	0.1	A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 26.6 and iPadOS 26.6, ...	2026-07-27
CVE-2026-43714	🔶 medium	5.5	0.1	The issue was addressed with improved input sanitization. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia...	2026-07-27
CVE-2026-43723	⚠️ high	7.8	0.2	A path handling issue was addressed with improved validation. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Seq...	2026-07-27

These CVEs affect the same products