Security readout for executives and security teams
War FTP, a Windows FTP server popular in the late 1990s, contains a buffer overflow that lets a remote attacker run commands on the host. In practical terms, anyone able to reach the FTP service could take control of the machine. The bug is decades old, so exposure today is limited to legacy or unmaintained systems still running this software. Exposure is niche in 2026. Risk concentrates in legacy Windows hosts, lab environments, or archived appliances still running War FTP, especially if the service is reachable from untrusted networks. Modern estates that retired the product long ago are effectively unaffected. Low-to-moderate for modern enterprises; high if any legacy host still runs War FTP and is network reachable. Treat any discovery as an immediate remediation candidate rather than a scheduled patch. Mitigation focus: Inventory hosts for any running War FTP instance and prioritize legacy Windows systems.; Retire or replace War FTP with a supported, maintained FTP or SFTP server.; If retirement is not immediate, block inbound FTP at the perimeter and restrict to trusted management VLANs..
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-1999-0256 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
Products and packages named in the record
CWE details
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