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."
Published: 2016-12-09
Score: 7.5 High
EPSS: 26.9% Moderate
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Fri, 29 May 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-29T20:45:20.720Z

Reserved: 2016-10-19T00:00:00.000Z

Link: CVE-2016-8858

cve-icon Vulnrichment

Updated: 2024-08-06T02:35:01.046Z

cve-icon NVD

Status : Modified

Published: 2016-12-09T11:59:00.207

Modified: 2026-05-29T21:16:30.127

Link: CVE-2016-8858

cve-icon Redhat

Severity : Moderate

Publid Date: 2016-10-17T00:00:00Z

Links: CVE-2016-8858 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses