What’s Vulnerable › Vulnerabilities

CVE-2026-86903

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% 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-125

Description

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. An app may be able to disclose kernel memory.

Affected products

• Apple iPadOS: before 27.0 — fixed in 27.0
• Apple Iphone Os: before 27.0 — fixed in 27.0
• Apple macOS: before 27.0 — fixed in 27.0
• 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 27 — fixed in 27
• Apple macOS: before 27 — fixed in 27
• 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 27.0; Apple Iphone Os 27.0; Apple macOS 27.0; Apple tvOS 27.0; Apple visionOS 27.0; Apple watchOS 27.0; Apple iOS and iPadOS 27; Apple macOS 27; Apple tvOS 27; Apple visionOS 27; Apple watchOS 27. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/149034
• https://support.apple.com/en-us/149035
• 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-2026-86903 or the next vulnerability affects your stack