What’s Vulnerable › Vulnerabilities

CVE-2026-65396

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-20 · updated 2026-10-26
• Weakness: CWE-119

Description

A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.

Affected products

• Apple macOS: before 15.8; before 26.7; before 27 — fixed in 15.8, 26.7, 27

How to fix

Upgrade to a fixed version: Apple macOS 15.8, 26.7, 27. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/149035
• https://support.apple.com/en-us/149042
• https://support.apple.com/en-us/149043

Get alerted when CVE-2026-65396 or the next vulnerability affects your stack