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CVE-1999-1291

TCP/IP implementation in Microsoft Windows 95, Windows NT 4.0, and possibly others, allows remote...

5.0 Medium

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.

Exploit likelihood

13.3%Up 3.6 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 5.0

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.

Record
CVE-1999-1291
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated
2026-11-02
CVE List No score

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.

Record
CVE-1999-1291
Updated
2026-11-02
EUVDEUVD-1999-1272 No score

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.

Record
EUVD-1999-1272
Updated
2026-11-03
GitHub AdvisoriesGHSA-6j2v-9wjh-8j7w No score

TCP/IP implementation in Microsoft Windows 95, Windows NT 4.0, and possibly others, allows remote...

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.

Record
GHSA-6j2v-9wjh-8j7w
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-1999-1291 is a medium vulnerability (CVSS 5.0) in Microsoft Windows 95, published October 5, 1998. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 13.3%, the 96th percentile. No source names a fixed version.

References

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