Security Advisory

CVE-2023-25136

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-02-03 00:00:00

Last updated 2026-05-28 17:43:14

Assigner mitre

State PUBLISHED

Description

OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible."

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