CVE-2011-1137: ProFTPD

Medium severity, CVSS 5.0. EPSS: 28.1% chance of exploitation in the next 30 days.

Integer overflow in the mod_sftp (aka SFTP) module in ProFTPD 1.3.3d and earlier allows remote attackers to cause a denial of service (memory consumption leading to OOM kill) via a malformed SSH message.

Affected products

• ProFTPD ProFTPD: up to and including 1.3.3; version 1.2.0 only; version 1.2.1 only; version 1.2.2 only; version 1.2.3 only; version 1.2.4 only; …

Published 2011-03-11. Last modified 2026-06-16.