CVE-2018-25226

FTPShell Server 6.83 Denial of Service via Account Name

CVSS 6.9 MEDIUMEPSS 0.2%CWE-787

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Proof of concept

Public proof of concept exists, but not yet automated.

CVSS 6.9EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

30 Mar 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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

Affected products

Ftpshell · FTPShell Server

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/46430unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

https://www.exploit-db.com/exploits/46430 https://www.vulncheck.com/advisories/ftpshell-server-denial-of-service-via-account-name http://www.ftpshell.com/downloadserver.htm http://www.ftpshell.com/index.htm