High severity · published Oct 20, 2026
CVE-2026-86949
This issue was addressed by enforcing library validation on the affected binaries
8.8
CVSS
0.1%
EPSS
No
On KEV
Description
This issue was addressed by enforcing library validation on the affected binaries. This issue is fixed in Xcode 27. A malicious app may be able to break out of its sandbox.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
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
XC
Xcode · Apple
before 27 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86949
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86949
support.apple.com
https://support.apple.com/en-us/149040
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