- Critical 9.8
- Known exploited (CISA KEV)
CVE-2026-65400
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.
Scores
The facts
- Published
- 6 August 2026
- Last changed
- 15 September 2026
- NVD status
- Analyzed
- Severity
- Critical, CVSS 9.8 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- Affects
- apple macos
- Known exploited
- Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 18 August 2026.
- EPSS
- 1.7% chance of exploitation activity in the next 30 days (percentile 77).
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