CVE-2025-43375: 
Xcode vulnerability analysis and mitigation

CVE-2025-43375 is a vulnerability discovered in Apple's Xcode development environment. The vulnerability was disclosed on September 15, 2025, and affects versions of Xcode prior to version 26. The issue specifically affects macOS Sequoia 15.6 and later versions, where processing an overly large path value may result in process crashes. The vulnerability was discovered and reported by security researcher Nathaniel Oh (@calysteon) (Apple Advisory).

The vulnerability has been assigned a CVSS v3.1 base score of 5.5 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. The technical assessment indicates that this is a local attack vector requiring user interaction but no privileges, with potential impact limited to availability. The vulnerability has been classified under CWE-20 (Improper Input Validation). The issue stems from improper path handling and was addressed through improved validation checks (NVD).

The primary impact of this vulnerability is on system availability, where successful exploitation could result in process crashes. The vulnerability has a High impact on availability (A:H) while having no direct impact on confidentiality (C:N) or integrity (I:N) (NVD).

Apple has addressed this vulnerability in Xcode version 26. Users are advised to update to this version to mitigate the risk. The fix implements improved validation checks for path handling (Apple Advisory).