CVE-2015-6565: OpenBSD OpenSSH

High severity, CVSS 7.2. EPSS: 2.7% chance of exploitation in the next 30 days.

sshd in OpenSSH 6.8 and 6.9 uses world-writable permissions for TTY devices, which allows local users to cause a denial of service (terminal disruption) or possibly have unspecified other impact by writing to a device, as demonstrated by writing an escape sequence.

Affected products

• OpenBSD OpenSSH: version 6.8 only; version 6.9 only

Published 2015-08-24. Last modified 2026-06-17.