Input Validation Flaws in Apple Keychain Across Multiple Platforms
CVE-2026-28860

7.5HIGH

Key Information:

Vendor

Apple
Status
iOS And iPad OS
Mac OS
TV OS
Visionos
Vendor
CVE Published:
11 May 2026

What is CVE-2026-28860?

A vulnerability in Apple's Keychain allows local attackers to potentially alter the state of the Keychain due to insufficient input validation. This could lead to unauthorized modifications and affect user data integrity. Fortunately, Apple has released updates addressing this issue across various platforms, including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS.

Affected Version(s)

iOS and iPadOS 0 < 18.7.7

iOS and iPadOS 0 < 26.4

macOS 0 < 14.8.5

References

https://support.apple.com/en-us/126792
https://support.apple.com/en-us/126793
https://support.apple.com/en-us/126794

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.