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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.

PUBLISHED Reserved 2026-03-30 | Published 2026-03-30 | Updated 2026-03-30 | Assigner VulnCheck




MEDIUM: 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
MEDIUM: 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Out-of-bounds Write

Product status

6.83
affected

Credits

Victor Mondragón finder

References

www.exploit-db.com/exploits/46430 (ExploitDB-46430) exploit

www.ftpshell.com/index.htm (Official Product Homepage) product

www.ftpshell.com/downloadserver.htm (Product Reference) product

www.vulncheck.com/...rver-denial-of-service-via-account-name (VulnCheck Advisory: FTPShell Server 6.83 Denial of Service via Account Name) third-party-advisory

cve.org (CVE-2018-25226)

nvd.nist.gov (CVE-2018-25226)

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