CVE-1999-1291

Medium CVSS 5

Published 1998-10-05 · last changed 2026-06-16

The fix

We hold no Microsoft remediation data for CVE-1999-1291, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

TCP/IP implementation in Microsoft Windows 95, Windows NT 4.0, and possibly others, allows remote attackers to reset connections by forcing a reset (RST) via a PSH ACK or other means, obtaining the target's last sequence number from the resulting packet, then spoofing a reset to the target.

Sources

NVD record for CVE-1999-1291

CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P