Medium severity · published Sep 14, 2026
CVE-2026-84596
An out-of-bounds read was addressed with improved bounds checking
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. Processing a maliciously crafted font may result in the disclosure of process memory.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
macOS · Apple
before 27 · source: vendor, NVD
IO
iOS · Apple
before 27.0 · source: NVD
IA
iOS and iPadOS · Apple
before 27 · source: vendor
TV
tvOS · Apple
before 27 · source: vendor, NVD
VI
visionOS · Apple
before 27 · source: vendor, NVD
WA
watchOS · Apple
before 27 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84596
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-84596
Vendor Advisory
https://support.apple.com/en-us/149034
Vendor Advisory
https://support.apple.com/en-us/149035
Vendor Advisory
https://support.apple.com/en-us/149036
Vendor Advisory
https://support.apple.com/en-us/149037
Vendor Advisory
https://support.apple.com/en-us/149038
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