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Vulnerability record · CVE-2007-4909 · published 17 September 2007

CVE-2007-4909: Winscp permissions and access controls vulnerability

Winscp · Winscp

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.

9.3 CVSS 2.0 High EPSS 3.5% · top 11.2% CWE-264 · Permissions and access controls
9.3CVSS 2.0 base score
3.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/26820 PatchVendor Advisory
http://securityreason.com/securityalert/3141
http://winscp.cvs.sourceforge.net/winscp/winscp3/core/SessionData.cpp?r1=1.29&r2=1.30
http://winscp.net/eng/docs/history/
http://www.securityfocus.com/archive/1/479298/100/0/threaded
http://www.securityfocus.com/bid/25655 Patch
http://www.securitytracker.com/id?1018697
https://exchange.xforce.ibmcloud.com/vulnerabilities/36591
http://secunia.com/advisories/26820 PatchVendor Advisory
http://securityreason.com/securityalert/3141
http://winscp.cvs.sourceforge.net/winscp/winscp3/core/SessionData.cpp?r1=1.29&r2=1.30
http://winscp.net/eng/docs/history/
http://www.securityfocus.com/archive/1/479298/100/0/threaded
http://www.securityfocus.com/bid/25655 Patch
http://www.securitytracker.com/id?1018697
https://exchange.xforce.ibmcloud.com/vulnerabilities/36591

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2002-1357Cisco ios memory buffer overflow vulnerabilityMultiple SSH2 servers and clients do not properly handle packets or data elements with incorrect length specifiers, which may allow remote attackers …EPSS 9.8%10.0CVE-2002-1358Cisco ios improper input validation vulnerabilityMultiple SSH2 servers and clients do not properly handle lists with empty elements or strings, which may allow remote attackers to cause a denial of …EPSS 5.8%10.0CVE-2002-1359SSH2 implementations mishandle large packets, enabling DoS and possible code executionMultiple SSH2 servers and clients fail to properly handle large packets or large fields, leading to buffer overflow conditions. The flaw was demonstr…EPSS 80%analysed10.0CVE-2002-1360Cisco ios improper input validation vulnerabilityMultiple SSH2 servers and clients do not properly handle strings with null characters in them when the string length is specified by a length field, …EPSS 6.1%9.8CVE-2021-3331Winscp vulnerabilityWinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings…EPSS 7.6%9.8CVE-2020-28864Winscp classic buffer overflow vulnerabilityBuffer overflow in WinSCP 5.17.8 allows a malicious FTP server to cause a denial of service or possibly have other unspecified impact via a long file…EPSS 2.8%7.5CVE-2018-20684Winscp improper input validation vulnerabilityIn WinSCP before 5.14 beta, due to missing validation, the scp implementation would accept arbitrary files sent by the server, potentially overwritin…EPSS 2.8%7.1CVE-2006-3015Winscp argument injection vulnerabilityArgument injection vulnerability in WinSCP 3.8.1 build 328 allows remote attackers to upload or download arbitrary files via encoded spaces and doubl…EPSS 6.5%

Source: NIST National Vulnerability Database (record CVE-2007-4909), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.