Vulnerabilities of Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)

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CVE	Summary	Score	Published
CVE-2026-12297	Sandbox escape due to incorrect boundary conditions in the Networking component	9.6 Critical	Jun 16, 2026
CVE-2026-12296	Sandbox escape in the Security: Process Sandboxing component	9.6 Critical	Jun 16, 2026
CVE-2026-12295	Sandbox escape in the DOM: Navigation component	9.6 Critical	Jun 16, 2026
CVE-2026-12294	Sandbox escape in the DOM: Workers component	9.6 Critical	Jun 16, 2026
CVE-2026-4408	Samba: remote code execution in samr	9.0 Critical	May 28, 2026
CVE-2026-4480	Samba: samba: remote code execution in printing subsystem via unescaped job description	9.0 Critical	May 26, 2026
CVE-2026-42508	Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation	9.1 Critical	May 22, 2026
CVE-2026-8401	Sandbox escape in the Profile Backup component	9.8 Critical	May 12, 2026
CVE-2026-8094	Other issue in the WebRTC component	9.8 Critical	May 7, 2026
CVE-2026-34078	Flatpak is a Linux application sandboxing and distribution framework	9.3 Critical	Apr 7, 2026