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Vulnerability record · CVE-2017-15270 · published 15 November 2017

CVE-2017-15270: Psftpd improper input validation vulnerability

PPsftp · Psftpd

The PSFTPd 10.0.4 Build 729 server does not properly escape data before writing it into a Comma Separated Values (CSV) file. This can be used by attackers to hide data in the Graphical User Interface (GUI) view and create arbitrary entries to a certain extent. Special characters such as '"' and ',' and '\r' are not escaped and can be used to add new entries to the log.

5.3 CVSS 3.0 Medium EPSS 7.0% · top 6.1% CWE-20 · Improper input validation
5.3CVSS 3.0 base score, v2 5.0
7.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

The PSFTPd 10.0.4 Build 729 server does not properly escape data before writing it into a Comma Separated Values (CSV) file. This can be used by attackers to hide data in the Graphical User Interface (GUI) view and create arbitrary entries to a certain extent. Special characters such as '"' and ',' and '\r' are not escaped and can be used to add new entries to the log.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

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

References

LinkTags
http://packetstormsecurity.com/files/144972/PSFTPd-Windows-FTP-Server-10.0.4-Build-729-Use-After-Free-Log-Injection.html Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/541518/100/0/threaded
https://www.exploit-db.com/exploits/43144/ Third Party AdvisoryVDB Entry
https://www.x41-dsec.de/lab/advisories/x41-2017-006-psftpd/ Third Party Advisory
http://packetstormsecurity.com/files/144972/PSFTPd-Windows-FTP-Server-10.0.4-Build-729-Use-After-Free-Log-Injection.html Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/541518/100/0/threaded
https://www.exploit-db.com/exploits/43144/ Third Party AdvisoryVDB Entry
https://www.x41-dsec.de/lab/advisories/x41-2017-006-psftpd/ Third Party Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2017-15270), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.