Vulnerability record · CVE-2018-15919 · published 28 August 2018

CVE-2018-15919: Openbsd openssh information exposure vulnerability

Openbsd · Openssh

Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'

5.3 CVSS 3.1 Medium EPSS 3.6% · top 11.1% CWE-200 · Information exposure

5.3CVSS 3.1 base score, v2 5.0

3.6%EPSS exploitation probability, 30 days

NoNot in CISA KEV

6Affected product versions listed by NVD

6References

17 Jun 2026Last modified by NVD

Description

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

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

NCloud Backup Netapp NCn1610 Firmware Netapp NData Ontap Edge Netapp NOntap Select Deploy Netapp NSteelstore Netapp

Openssh Openbsd

References

Link	Tags
http://seclists.org/oss-sec/2018/q3/180	Mailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/105163	Third Party AdvisoryVDB Entry
https://security.netapp.com/advisory/ntap-20181221-0001/	Third Party Advisory
http://seclists.org/oss-sec/2018/q3/180	Mailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/105163	Third Party AdvisoryVDB Entry
https://security.netapp.com/advisory/ntap-20181221-0001/	Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-15919), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.