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Vulnerability record · CVE-2018-25226 · published 30 March 2026

CVE-2018-25226: Ftpshell server out-of-bounds write vulnerability

Ftpshell · Ftpshell Server

FTPShell Server 6.83 contains a buffer overflow vulnerability that allows local attackers to crash the application by supplying an excessively long string in the account name field. Attackers can trigger a denial of service by pasting a 417-byte payload into the 'Account name to ban' parameter within the Manage FTP Accounts interface.

6.9 CVSS 4.0 Medium EPSS 0.22% · top 88.6% CWE-787 · Out-of-bounds write
6.9CVSS 4.0 base score
0.22%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

FTPShell Server 6.83 contains a buffer overflow vulnerability that allows local attackers to crash the application by supplying an excessively long string in the account name field. Attackers can trigger a denial of service by pasting a 417-byte payload into the 'Account name to ban' parameter within the Manage FTP Accounts interface.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

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

References

LinkTags
http://www.ftpshell.com/downloadserver.htm Broken Link
http://www.ftpshell.com/index.htm Product
https://www.exploit-db.com/exploits/46430 ExploitVDB Entry
https://www.vulncheck.com/advisories/ftpshell-server-denial-of-service-via-account-name 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-2018-25226), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.