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Vulnerability record · CVE-1999-1127 · published 31 December 1999

CVE-1999-1127: Microsoft windows nt vulnerability

Microsoft · Windows Nt

Windows NT 4.0 does not properly shut down invalid named pipe RPC connections, which allows remote attackers to cause a denial of service (resource exhaustion) via a series of connections containing malformed data, aka the "Named Pipes Over RPC" vulnerability.

7.5 CVSS 3.1 High EPSS 18% · top 2.9% CWE-772 · CWE-772
7.5CVSS 3.1 base score, v2 5.0
18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

Windows NT 4.0 does not properly shut down invalid named pipe RPC connections, which allows remote attackers to cause a denial of service (resource exhaustion) via a series of connections containing malformed data, aka the "Named Pipes Over RPC" vulnerability.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://support.microsoft.com/support/kb/articles/Q195/7/33.asp Broken LinkPatchVendor Advisory
http://www.iss.net/security_center/static/523.php Broken Link
https://docs.microsoft.com/en-us/security-updates/securitybulletins/1998/ms98-017 PatchVendor Advisory
http://support.microsoft.com/support/kb/articles/Q195/7/33.asp Broken LinkPatchVendor Advisory
http://www.iss.net/security_center/static/523.php Broken Link
https://docs.microsoft.com/en-us/security-updates/securitybulletins/1998/ms98-017 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-1999-1127), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.