CVE-2026-65400Critical· 9.8▾ Hadal⚠ Exploited in the wildPoC availableAn 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…
▾ Hadal zone — Critical and actively exploited (CISA KEV / 0day)
impact 53.9 · likelihood 2.1 · exploitation 25
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Aug 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.5%
Federal remediation due Aug 21, 2026
3 GitHub repos
Last analysed / modified upstream
0.5% → 10%
Added to the CISA catalog on Aug 18, 2026. Federal remediation due Aug 21, 2026. View catalog ↗
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.
macos >= 14.0, < 14.8.9macos >= 15.0, < 15.7.9macos >= 26.0, < 26.6.1Upgrade past the affected range:
macos 26.6.1Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-65374High· 8.8A memory corruption issue was addressed with improved validation
CVE-2026-84537Medium· 6.6The issue was addressed with improved memory handling
CVE-2026-84576Medium· 5.5This issue was addressed with improved checks
CVE-2026-28934Medium· 6.5A buffer overflow was addressed with improved bounds checking
CVE-2026-65365Medium· 6.5An out-of-bounds read was addressed with improved bounds checking
CVE-2026-84517Medium· 5.5An integer overflow was addressed with improved input validation