CVE-2026-28931
Received Received - Intake

Buffer Overflow in iOS and macOS via Malicious NFS Server

Publication date: 2026-07-27

Last updated on: 2026-07-27

Assigner: Apple Inc.

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-07-27
Last Modified
2026-07-27
Generated
2026-07-28
AI Q&A
2026-07-28
EPSS Evaluated
N/A
NVD
CVE-2026-28931
EUVD
EUVD-2026-49422

Affected Vendors & Products

Showing 5 associated CPEs
Vendor Product Version / Range
apple ios 26.6
apple ipad_os 26.6
apple macos_tahoe 26.6
apple tv_os 26.6
apple watch_os 26.6

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 is a buffer overflow vulnerability caused by insufficient bounds checking. It allows a malicious NFS server to corrupt kernel memory when a vulnerable device connects to it. The issue was fixed in specific versions of iOS, iPadOS, macOS, tvOS, and watchOS.

Impact Analysis

If you connect to a malicious NFS server, an attacker could exploit this flaw to corrupt kernel memory on your device. This may lead to system crashes, data corruption, or unauthorized code execution with elevated privileges.

Mitigation Strategies

Update your devices to iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, or watchOS 26.6 or later to address the buffer overflow issue. Avoid connecting to untrusted NFS servers to prevent potential kernel memory corruption.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-28931. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart