CVE-2026-28860
Received Received - Intake
Keychain State Modification Vulnerability in Apple iOS and macOS

Publication date: 2026-05-11

Last updated on: 2026-05-11

Assigner: Apple Inc.

Description
The issue was addressed with improved input validation. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. A local attacker may be able to modify the state of the Keychain.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-05-11
Last Modified
2026-05-11
Generated
2026-06-21
AI Q&A
2026-05-12
EPSS Evaluated
2026-06-20
NVD
CVE-2026-28860
Affected Vendors & Products
Showing 8 associated CPEs
Vendor Product Version / Range
apple ios 18.7.7
apple ipados 18.7.7
apple macos_sequoia 15.7.5
apple macos_sonoma 14.8.5
apple macos_tahoe 26.4
apple tvos 26.4
apple visionos 26.4
apple watchos 26.4
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability involves a flaw in input validation that could allow a local attacker to modify the state of the Keychain on affected Apple operating systems.

The issue was addressed by improving input validation and fixed in multiple Apple OS versions including iOS, iPadOS, macOS Sequoia, macOS Sonoma, macOS Tahoe, tvOS, visionOS, and watchOS.

Impact Analysis

A local attacker exploiting this vulnerability may be able to modify the state of the Keychain, which could potentially lead to unauthorized access or manipulation of sensitive stored credentials and secrets.

Mitigation Strategies

To mitigate this vulnerability, you should update your Apple devices to the fixed versions of the operating systems as soon as possible.

  • Update to iOS 18.7.7 or iOS 26.4 for iPhone devices.
  • Update to iPadOS 18.7.7 or iPadOS 26.4 for iPad devices.
  • Update to macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, or macOS Tahoe 26.4 for Mac devices.
  • Update to tvOS 26.4 for Apple TV devices.
  • Update to visionOS 26.4 for visionOS devices.
  • Update to watchOS 26.4 for Apple Watch devices.
Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-28860. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart