What’s Vulnerable › Vulnerabilities

CVE-2014-2735

• Severity: medium (CVSS 5.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2014-04-22 · updated 2026-06-17
• Weakness: CWE-20

Description

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: through 5.5.2; 5.5, 5.5.1

References

• http://winscp.net/eng/docs/history
• http://winscp.net/tracker/show_bug.cgi?id=1152
• http://www.securityfocus.com/archive/1/531847/100/0/threaded
• http://winscp.net/eng/docs/history
• http://winscp.net/tracker/show_bug.cgi?id=1152
• http://www.securityfocus.com/archive/1/531847/100/0/threaded

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