OpenBSD vulnerability allows local users to escalate privileges to root

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A use-after-free vulnerability has been identified in OpenBSD, tracked as CVE-2026-57589. The flaw can be exploited by local users to gain root-level privileges on affected systems. Details of the vulnerability have been published in the National Vulnerability Database maintained by NIST. Use-after-free bugs occur when a program continues to access memory after it has been freed, potentially allowing attackers to execute arbitrary code or escalate privileges. Users and administrators running OpenBSD are advised to monitor official channels for patches or mitigations.

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ProgrammingDEV Community ·

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