CVE-2014-2735: Winscp

Medium severity, CVSS 5.8. EPSS: 0.8% chance of exploitation in the next 30 days.

WinSCP before 5.5.3, when FTP with TLS is used, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

Affected products

• Winscp Winscp: up to and including 5.5.2; version 5.5 only; version 5.5.1 only

Published 2014-04-22. Last modified 2026-06-17.