Buffer overflow in Apple macOS

CVE-2026-84588

A memory corruption issue was addressed by removing the vulnerable code. This issue is fixed in macOS Golden Gate 27. Mounting a maliciously crafted disk image may cause unexpected system termination or corrupt kernel memory.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (26.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-84588: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-84588?
CVE-2026-84588 is a medium-severity vulnerability in Apple macOS, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2026-09-14.
How severe is CVE-2026-84588?
Medium severity. CVSS v3 base score is 6.5 out of 10.