CVE-2016-8858

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests. NOTE: a third party reports that "OpenSSH upstream does not consider this as a security issue."

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-399 CWE-400

Affected software

No affected versions have been published.

Timeline

Published: Dec 9, 2016
Last modified: Jun 17, 2026
NVD status: Modified

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