CVE-2026-28931

State: Published
Severity: 8.8 High
Published: Jul 27, 2026
Updated: Jul 29, 2026
Reserved: Mar 3, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected Products

Product	Versions
iOS and iPadOSApple	before 26.6Affected
macOSApple	before 26.6Affected
tvOSApple	before 26.6Affected
watchOSApple	before 26.6Affected

References

https://support.apple.com/en-us/128066
https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128068
https://support.apple.com/en-us/128069

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