CVE-2012-6063: Libssh

High severity, CVSS 7.5. EPSS: 3.6% chance of exploitation in the next 30 days.

Double free vulnerability in the sftp_mkdir function in sftp.c in libssh before 0.5.3 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors, a different vector than CVE-2012-4559.

Affected products

• Libssh Libssh: up to and including 0.5.2; version 0.4.7 only; version 0.4.8 only; version 0.5.0 only; version 0.5.1 only

Published 2012-11-30. Last modified 2026-06-16.