CVE-2026-84544 Apple macOS - Integer Overflow

Apple macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7 contain an integer overflow caused by insufficient input validation when connecting to a malicious NFS server, letting attackers cause system termination or kernel memory corruption, exploit requires connection to malicious NFS server.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.57% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Integer Overflow
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-190

Vendor fix

Update to macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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