Buffer overflow in Apple Xcode
CVE-2025-43504
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.
Vulnerability class: Buffer Overflow
EPSS: 0.003 (26.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apple Xcode — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- product-security@apple.com (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-43504?
- CVE-2025-43504 is a medium-severity vulnerability in Apple Xcode, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.9/10. Published 2025-11-04.
- How severe is CVE-2025-43504?
- Medium severity. CVSS v3 base score is 4.9 out of 10.
- Is CVE-2025-43504 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.