CVE-2018-15473

OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid a…

OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.

Vendor: openbsd
Product: openssh
CVSS 3.1: 5.3 (medium), scored by NVD (primary)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 3.1: 5.9 (medium), scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE: CWE-362
Published: 2018-08-17
NVD modified: 2026-06-17
NVD status: Modified

Not in the CISA KEV catalogue at the last update.

EPSS

98.6% chance of exploitation in the next 30 days (percentile 99th)

FIRST EPSS, updated 17 Oct 2026. About EPSS

CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.

References

www.openwall.com (Mailing List, Patch, Third Party Advisory)
www.securityfocus.com (Broken Link, Third Party Advisory, VDB Entry)
www.securitytracker.com (Broken Link, Patch, Third Party Advisory)
access.redhat.com (Third Party Advisory)
access.redhat.com (Third Party Advisory)
bugs.debian.org (Issue Tracking, Mailing List, Patch)
cert-portal.siemens.com (Patch, Third Party Advisory)
github.com (Patch)
lists.debian.org (Mailing List, Third Party Advisory)
psirt.global.sonicwall.com (Third Party Advisory)
security.gentoo.org (Third Party Advisory)
security.netapp.com (Third Party Advisory)

Data last updated 18 Oct 2026. Sources: NVD API 2.0, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.