What’s Vulnerable › Vulnerabilities

CVE-2026-65390

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-14 · updated 2026-10-26
• Weakness: CWE-190

Description

An integer overflow was addressed with improved input validation. 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.

Affected products

• Apple iPadOS: before 26.6.1 — fixed in 26.6.1
• Apple Iphone Os: before 26.6.1 — fixed in 26.6.1
• Apple macOS: before 26.6.2 — fixed in 26.6.2
• Apple Safari: before 26.6.1 — fixed in 26.6.1
• Apple tvOS: before 27.0 — fixed in 27.0
• Apple visionOS: before 27.0 — fixed in 27.0
• Apple watchOS: before 27.0 — fixed in 27.0
• Apple iOS and iPadOS: before 26.6.1 — fixed in 26.6.1
• Apple macOS: before 26.6.2 — fixed in 26.6.2
• Apple Safari: before 26.6.1 — fixed in 26.6.1
• Apple tvOS: before 27 — fixed in 27
• Apple visionOS: before 27 — fixed in 27
• Apple watchOS: before 27 — fixed in 27

How to fix

Upgrade to a fixed version: Apple iPadOS 26.6.1; Apple Iphone Os 26.6.1; Apple macOS 26.6.2; Apple Safari 26.6.1; Apple tvOS 27.0; Apple visionOS 27.0; Apple watchOS 27.0; Apple iOS and iPadOS 26.6.1; Apple macOS 26.6.2; Apple Safari 26.6.1; Apple tvOS 27; Apple visionOS 27. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/148281
• https://support.apple.com/en-us/148282
• https://support.apple.com/en-us/148286
• https://support.apple.com/en-us/149036
• https://support.apple.com/en-us/149037
• https://support.apple.com/en-us/149038

Get alerted when CVE-2026-65390 or the next vulnerability affects your stack