What is CVE-2025-43505?

CVE-2025-43505 is a high-severity vulnerability in Apple Xcode, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2025-11-04.

How severe is CVE-2025-43505?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Apple Xcode

CVE-2025-43505

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in Xcode 26.1. Processing a maliciously crafted file may lead to heap corruption.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (18.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Apple Xcode — versions 0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

product-security@apple.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2025-43505?: CVE-2025-43505 is a high-severity vulnerability in Apple Xcode, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2025-11-04.
How severe is CVE-2025-43505?: High severity. CVSS v3 base score is 8.8 out of 10.