Local service crash via oversized ban-account name
Published Mar 30, 2026 · Updated Mar 30, 2026
Out-of-bounds write in FTPShell Server 6.83 allows local users to crash the application via an oversized account name in its management interface. The Manage FTP Accounts interface processes a 417-byte value from the 'Account name to ban' field by writing beyond the intended buffer. Local access to that interface is required, and the demonstrated consequence is interruption of the FTP service without reported data disclosure or modification.
Summary
What happened
Out-of-bounds write in FTPShell Server 6.83 allows local users to crash the application via an oversized account name in its management interface. The Manage FTP Accounts interface processes a 417-byte value from the 'Account name to ban' field by writing beyond the intended buffer. Local access to that interface is required, and the demonstrated consequence is interruption of the FTP service without reported data disclosure or modification.
The record
- CVE
- CVE-2018-25226
- Published
- Mar 30, 2026
- Updated
- Mar 30, 2026
- Vendor
- Codeorigin, LLC
- Product
- FTPShell Server
- Classifications
- CWE-787, T1499
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 30, 2026CVE publishedPublication date reported by the CVE source.
- Mar 30, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=6.83
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Exploit-DB 46430 FTPShell Server denial-of-service proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo