CVE-2017-2659: Dropbear SSH Project Dropbear SSH

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

It was found that dropbear before version 2013.59 with GSSAPI leaks whether given username is valid or invalid. When an invalid username is given, the GSSAPI authentication failure was incorrectly counted towards the maximum allowed number of password attempts.

Affected products

• Dropbear SSH Project Dropbear SSH: before 2013.59 (fixed in 2013.59)

Published 2019-03-21. Last modified 2026-06-17.