A buffer overflow was addressed with improved bounds checking. This issue is fixed in Xcode 26.1. A user in a privileged network position may be able to cause a denial-of-service.
Fix
Public exploits 1
- calysteon/CVE-2025-43504 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 1
- https://support.apple.com/en-us/125641 Release Notes, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 4.9 · appleNVD modified 2026-10-18 21:10
Affected (CPE criteria) 1
cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*
References 1
- https://support.apple.com/en-us/125641 Release Notes, Vendor Advisory