CVE-2026-65391

⚠️ high

Summary

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 26.6.1, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. Processing maliciously crafted web content may lead to memory corruption.

CVSS Score

8.8

High

EPSS Score

0.4

Exploit Probability

Published Date

2026-09-14

First Seen: 2026-09-16

📊 Relative Risk Intelligence

This CVE is High Risk - more severe than 80.8% of all 358,566 vulnerabilities in our database.

#68,827

Top 25% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: Sep 15, 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 2026-09-16

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-190

📦 Affected Products 7

Vendor	Product	Status	Affected Versions
apple	safari	Affected	< 26.6.1
apple	iphone_os	Affected	< 26.6.1
apple	watchos	Affected	< 27.0
apple	tvos	Affected	< 27.0
apple	ipados	Affected	< 26.6.1
apple	macos	Affected	< 26.6.2
apple	visionos	Affected	< 27.0

🔗 References 6

https://support.apple.com/en-us/148281

Release Notes Vendor Advisory

https://support.apple.com/en-us/148282

Release Notes Vendor Advisory

https://support.apple.com/en-us/148286

Release Notes Vendor Advisory

https://support.apple.com/en-us/149036

Release Notes Vendor Advisory

https://support.apple.com/en-us/149037

Release Notes Vendor Advisory

https://support.apple.com/en-us/149038

Release Notes Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-64753	🔶 medium	6.5	0.3	A permissions issue was addressed by removing the vulnerable code. This issue is fixed in Safari 27, iOS 27 and iPadOS 2...	2026-09-14
CVE-2026-65390	⚠️ high	8.8	0.4	An integer overflow was addressed with improved input validation. This issue is fixed in Safari 26.6.1, iOS 26.6.1 and i...	2026-09-14
CVE-2026-84518	🔶 medium	4.3	0.3	This issue was addressed through improved state management. This issue is fixed in Safari 27, iOS 27 and iPadOS 27, macO...	2026-09-14
CVE-2026-28960	⚠️ high	7.5	0.4	A denial-of-service issue was addressed with improved validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10....	2026-09-14
CVE-2026-43664	🔶 medium	5.5	0.2	This issue was addressed with improved data protection. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPad...	2026-09-14
CVE-2026-43684	⚠️ high	7.8	0.2	A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, m...	2026-09-14

These CVEs affect the same products