Status: KEV | Advisory ID: CVE-2026-65400
| CVE | CVE-2026-65400 |
| CVSS | CVSS 9.8 (Critical). |
| Affected products | Apple macOS |
| Exploitation status | Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation. |
| Classified as | CWE-287 (Improper Authentication) |
| KEV listing | Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-08-18. |
| Exploitation prediction (EPSS) | 10% probability of exploitation in the next 30 days (96% percentile) -- FIRST.org's EPSS model. |
| Federal remediation deadline | 2026-08-21 (CISA KEV, Binding Operational Directive). |
An authentication issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1, macOS Tahoe 26.7. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-65400 |