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Vulnerability record · CVE-2026-86958 · published 26 October 2026

CVE-2026-86958: Apple macos memory buffer overflow vulnerability

Apple · Macos

The issue was addressed with improved memory handling. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. An attacker with memory write capability may be able to bypass pointer authentication codes and run arbitrary code.

7.8 CVSS 3.1 High EPSS 0.23% · top 85.6% CWE-119 · Memory buffer overflow
7.8CVSS 3.1 base score
0.23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
10 Nov 2026Last modified by NVD

Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. An attacker with memory write capability may be able to bypass pointer authentication codes and run arbitrary code.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.apple.com/en-us/149035 Release NotesVendor Advisory
https://support.apple.com/en-us/149522 Release NotesVendor Advisory
https://support.apple.com/en-us/149523 Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-86958), CISA KEV, FIRST EPSS (scores of 2026-11-11). This page is refreshed as NVD updates the record.