Security readout for executives and security teams
A very old flaw in SunFTP build 9(1) let a remote user crash the FTP service simply by opening a connection and dropping it before completing the initial command. The result is a denial of service against that specific FTP server, not data theft or system takeover. The issue was disclosed in 2000 and is only relevant if a legacy SunFTP instance is still running somewhere in the environment. Extremely limited in 2026. SunFTP build 9(1) is a niche, obsolete FTP daemon; most organizations have long since retired it. Residual exposure would be an unmanaged legacy host still exposing this FTP service on a reachable network segment. Low priority. This is a 25-year-old denial-of-service bug in an obscure FTP server. Unless asset inventory shows a SunFTP build 9(1) host still running and reachable, no immediate action is warranted; treat as part of routine legacy decommissioning. Mitigation focus: Inventory FTP services and identify any SunFTP build 9(1) instances still running.; Retire or replace legacy SunFTP with a maintained, secure file transfer service such as SFTP or FTPS.; If retirement is not immediate, restrict FTP access to trusted management networks via firewall or ACL..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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CVE-2000-0855 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
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- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
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Source materials
- CVE List V5 sourceCVE List V5
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CWE details
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