5.0Medium
Microsoft Windows 2000
CVE-2000-1227
Windows NT 4.0 and Windows 2000 hosts allow remote attackers to cause a denial of service (unavailable connections) by sending multiple SMB SMBnegprots requests but not reading the response that is sent back.
What this means for your business
- It affects Microsoft Windows 2000. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network.
- FIRST's prediction model gives it a 13% chance of attack attempts being seen in the next 30 days, ranking above 96% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Microsoft Windows 2000, and which version. The affected versions are listed further down this page.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
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Scoring
- CVSS
- 5.0 (v2.0)
- Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Assigned by
- cve@mitre.org
Dates
- Published
- 2000-12-31
- Last modified
- 2026-09-23
- Sources
- NVD
Affected products
- Microsoft Windows 2000all versions
- Microsoft Windows Nt4.0
As listed in the NVD configuration data. Not a statement about your estate.