vulnerability

F5: CVE-2016-6515: K31510510: OpenSSH vulnerability CVE-2016-6515

Try Surface Command

Back to search

Severity

CVSS

(AV:N/AC:L/Au:N/C:N/I:N/A:C)

Published

Oct 19, 2016

Added

Jun 17, 2026

Modified

Jun 17, 2026

Description

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.

Solution

f5-bigip-upgrade-latest

References

CVE-2016-6515
https://attackerkb.com/topics/CVE-2016-6515
https://my.f5.com/manage/s/article/K31510510
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-7437
CWE-20
EUVD-EUVD-2016-7437

Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.

Get report