What is CVE-2026-65374?

CVE-2026-65374 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-09-14.

How severe is CVE-2026-65374?

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

Buffer overflow in Apple macOS

CVE-2026-65374

A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious WebDAV server may result in code execution.

Vulnerability class: Buffer Overflow

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 Macos

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

product-security@apple.com
product-security@apple.com
product-security@apple.com

Frequently asked questions

What is CVE-2026-65374?: CVE-2026-65374 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-09-14.
How severe is CVE-2026-65374?: High severity. CVSS v3 base score is 8.8 out of 10.