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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History
Thu, 28 May 2026 18:30:00 +0000
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ssvc
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-05-28T17:43:14.037Z
Reserved: 2023-02-03T00:00:00.000Z
Link: CVE-2023-25136
Updated: 2024-08-02T11:18:35.552Z
Status : Modified
Published: 2023-02-03T06:15:09.350
Modified: 2026-05-28T18:16:28.073
Link: CVE-2023-25136
OpenCVE Enrichment
No data.