What’s Vulnerable › Vulnerabilities
CVE-2026-64691
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-27 · updated 2026-10-24
- Weakness: CWE-120
Description
A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
Affected products
- Apple macOS: from 26.0 before 26.6 — fixed in 26.6
How to fix
Upgrade to a fixed version: Apple macOS 26.6. Check the vendor advisory for mitigations.
References
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