A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, watchOS 26.6. Connecting to a malicious NFS server may lead to kernel memory corruption.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Apple
  • Ios And Ipados
  • Macos
  • Tvos
  • Watchos

No data.

No data.

References
Link Providers
https://support.apple.com/en-us/128066 cve-icon
https://support.apple.com/en-us/128067 cve-icon
https://support.apple.com/en-us/128068 cve-icon
https://support.apple.com/en-us/128069 cve-icon
History

Tue, 28 Jul 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

 cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 28 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
Title Kernel Memory Corruption via Buffer Overflow in NFS Client Leading to Potential Privilege Escalation
Weaknesses CWE-119
CWE-120
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 28 Jul 2026 01:30:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple ios And Ipados
Apple macos
Apple tvos
Apple watchos
Vendors & Products Apple
Apple ios And Ipados
Apple macos
Apple tvos
Apple watchos

Mon, 27 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Description A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, watchOS 26.6. Connecting to a malicious NFS server may lead to kernel memory corruption.
References
cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published: 2026-07-27T20:14:05.946Z

Updated: 2026-07-29T03:55:42.970Z

Reserved: 2026-03-03T16:36:03.987Z

Link: CVE-2026-28931

cve-icon Vulnrichment

Updated: 2026-07-28T13:41:26.669Z

cve-icon NVD

No data.

cve-icon Redhat

No data.