CVE-2016-6515: Fedoraproject Fedora

High severity, CVSS 7.5. EPSS: 58.6% chance of exploitation in the next 30 days.

The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.

Affected products

• Fedoraproject Fedora: version 24 only
• OpenBSD OpenSSH: up to and including 7.2

Published 2016-08-07. Last modified 2026-06-17.