Medium severity · published Mar 25, 2026
CVE-2026-28890
An out-of-bounds read was addressed with improved bounds checking
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in Xcode 26.4. An app may be able to cause unexpected system termination.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XC
Xcode · Apple
before 26.4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-28890
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-28890
Vendor Advisory
https://support.apple.com/en-us/126801
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