CVE-2013-4434: Dropbear SSH Project Dropbear SSH

Medium severity, CVSS 5.0. EPSS: 5.7% chance of exploitation in the next 30 days.

Dropbear SSH Server before 2013.59 generates error messages for a failed logon attempt with different time delays depending on whether the user account exists, which allows remote attackers to discover valid usernames.

Affected products

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

Published 2013-10-25. Last modified 2026-06-16.