CVE-2026-84515
CVSS v3
7.8
HIGH
EPSS Score
0.2 %
exploit probability, as of 2026-09-28
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to kernel memory corruption.
Technical details
- Published
- 2026-09-14
- Last Modified
- 2026-09-16
Frequently asked questions
What is CVE-2026-84515?
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to kernel memory corruption.
Is CVE-2026-84515 actively exploited?
Active exploitation of CVE-2026-84515 has not been confirmed. Its EPSS score was 0.2% on 2026-09-28, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-84515?
CVE-2026-84515 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2026-84515 affecting your environment?
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