Medium severity · published Oct 20, 2026
CVE-2026-86921
A permissions issue was addressed with improved validation
6.2
CVSS
0.1%
EPSS
No
On KEV
Description
A permissions issue was addressed with improved validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27. A local attacker may be able to overwrite restricted files.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% 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
IA
iOS and iPadOS · Apple
before 26.7; before 27 · source: vendor
VI
visionOS · Apple
before 27 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86921
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86921
support.apple.com
https://support.apple.com/en-us/149034
support.apple.com
https://support.apple.com/en-us/149035
support.apple.com
https://support.apple.com/en-us/149038
support.apple.com
https://support.apple.com/en-us/149041
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