Security readout for executives and security teams
Old Windows NT 4.0 servers had a flaw in how they handled a specific type of network connection called named pipes over RPC. A remote attacker could open a stream of malformed connections that the server failed to close, exhausting resources and knocking the system offline. This is a denial-of-service issue on a legacy platform Microsoft addressed in security bulletin MS98-017. Exposure today is minimal. Windows NT 4.0 reached end of support in 2004 and should not be present in any modern environment. Any remaining NT 4.0 hosts reachable over SMB/RPC (TCP 139/445) would be the theoretical exposure surface, but the platform itself is the far larger risk than this specific bug. Very low priority for modern environments. Only relevant if legacy Windows NT 4.0 servers still exist; those systems represent a broader compliance and security concern that outweighs this specific denial-of-service bug. Prioritize decommissioning legacy platforms over patching this individual issue. Mitigation focus: Retire any remaining Windows NT 4.0 systems; the platform is unsupported.; If retirement is not immediate, apply the MS98-017 patch referenced in KB Q195733.; Restrict inbound access to RPC and SMB ports (135, 139, 445) at the network edge..
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-1999-1127 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- MS98-017CVE reference · vendor-advisory, x_refsource_MS
Products and packages named in the record
CWE details
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