---
id: CVE-2026-28860
title: The issue was addressed with improved input validation
summary: >-
  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…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cvssSource: adp
vendor: Apple
product: iOS and iPadOS
affected:
  - ios_and_ipados < 18.7.7
  - ios_and_ipados < 26.4
  - macOS < 14.8.5
  - macOS < 15.7.5
  - macOS < 26.4
  - tvOS < 26.4
  - visionOS < 26.4
  - watchOS < 26.4
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-05-12T13:31:00.279867Z'
published: '2026-05-11'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T20:37:16.151Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-28860'
references:
  - url: 'https://support.apple.com/en-us/126792'
  - url: 'https://support.apple.com/en-us/126793'
  - url: 'https://support.apple.com/en-us/126794'
  - url: 'https://support.apple.com/en-us/126795'
  - url: 'https://support.apple.com/en-us/126796'
  - url: 'https://support.apple.com/en-us/126797'
  - url: 'https://support.apple.com/en-us/126798'
  - url: 'https://support.apple.com/en-us/126799'
tags:
  - cve.org
epss: 0.0038
epssPercentile: 0.3183
ingestedAt: '2026-10-27T16:11:58.914Z'
---

## Overview

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.

## Affected

- `ios_and_ipados < 18.7.7`
- `ios_and_ipados < 26.4`
- `macOS < 14.8.5`
- `macOS < 15.7.5`
- `macOS < 26.4`
- `tvOS < 26.4`
- `visionOS < 26.4`
- `watchOS < 26.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.