QNAP NAS Elevation of Privilege Vulnerability

A vulnerability was identified in QNAP NAS. A local attacker can exploit this vulnerability to trigger elevation of privilege on the targeted system.

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CVE-2026-31431 is being exploited in the wild. A local privilege escalation vulnerability, commonly known as "Copy Fail", has been reported to affect the Linux kernel. If exploited, this vulnerability could allow an authenticated, non-administrator user with code execution capabilities to obtain elevated system privileges.