CVE-2007-4909: Winscp

High severity, CVSS 9.3. EPSS: 3.5% chance of exploitation in the next 30 days.

Interpretation conflict in WinSCP before 4.0.4 allows remote attackers to perform arbitrary file transfers with a remote server via file-transfer commands in the final portion of a (1) scp, and possibly a (2) sftp or (3) ftp, URL, as demonstrated by a URL specifying login to the remote server with a username of scp, which is interpreted as an HTTP scheme name by the protocol handler in a web browser, but is interpreted as a username by WinSCP. NOTE: this is related to an incomplete fix for CVE-2006-3015.

Affected products

• Winscp Winscp: version 2.0.0 only; version 3.5.5_beta only; version 3.5.6 only; version 3.6 only; version 3.6.1 only; version 3.6.5_beta only; …

Published 2007-09-17. Last modified 2026-06-16.