Security readout for executives and security teams
A very old flaw in the Windows NT 4.0 print spooler let anyone already logged into the machine gain higher privileges by pointing the spooler at their own code. It was addressed by Microsoft in 1999 through security bulletin MS99-047 and knowledge base article Q243649. It only matters today if a legacy NT 4.0 system is still running somewhere in the environment. Exposure is limited to Windows NT 4.0 systems, which reached end of support in 2004. Modern Windows environments are not affected. Residual risk exists only where legacy NT 4.0 hosts remain in industrial control, lab, or archival deployments and expose interactive or terminal-session logins. Low priority for modern estates. Elevate to high only if the asset inventory confirms any Windows NT 4.0 systems are still operational, in which case the broader end-of-life risk is the real concern, not this single 1999-era bug. Mitigation focus: Apply the Microsoft MS99-047 update (KB Q243649) on any remaining Windows NT 4.0 systems.; Retire or isolate legacy NT 4.0 hosts, as the OS is unsupported and receives no modern security fixes.; Restrict interactive and network logon rights on legacy hosts to a minimal administrative set..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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CVE-1999-0899 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
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- MS99-047CVE reference · vendor-advisory, x_refsource_MS
Products and packages named in the record
CWE details
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