CVE-2016-20012

openssh: Public key information leak

Published Sep 15, 2021 CVSS 3.1 · 5.3 Medium EPSS 5.3% KEV · Not listed
Description
OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-203
Metrics ssvc

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

Type Values Removed Values Added
Metrics epss

{'score': 0.20004}

epss

{'score': 0.21372}

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 29, 2026, 3:38 PM
Reserved
Sep 15, 2021, 12:00 AM
Status
Modified
Published
Sep 15, 2021, 8:15 PM
Modified
Jun 17, 2026, 12:43 AM
Severity
Low
Public date
Feb 7, 2016, 12:00 AM