High severity · published Sep 14, 2026
CVE-2026-84565
An out-of-bounds read was addressed with improved bounds checking
7.1
CVSS
0.2%
EPSS
No
On KEV
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Processing a maliciously crafted disk image may lead to unexpected app termination.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
macOS · Apple
before 15.8; before 26.7; before 27 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84565
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-84565
Release Notes
https://support.apple.com/en-us/149035
Release Notes
https://support.apple.com/en-us/149042
Release Notes
https://support.apple.com/en-us/149043
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