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CVE Record

CVE-1999-1291: TCP/IP implementation in Microsoft Windows 95, Windows NT 4.0, and possibly others, allows remote attackers...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This is an old TCP/IP flaw reported for Microsoft Windows 95 and Windows NT 4.0. An attacker could remotely disrupt existing network sessions by forcing or spoofing TCP reset behavior. The sources do not show code execution, data theft, CVSS scoring, KEV listing, or active exploitation. Exposure is most plausible on legacy Windows 95 or Windows NT 4.0 systems, embedded appliances, lab networks, or unsupported business systems using the affected TCP/IP stack. Modern supported Windows systems are not identified as affected in the provided bundle. Prioritize only if legacy Microsoft systems remain connected to business or external networks. The main business risk is availability disruption, not proven compromise. If no affected legacy systems exist, this should be tracked as historical hygiene. Mitigation focus: Identify and retire unsupported Windows 95 and Windows NT 4.0 systems.; Isolate unavoidable legacy hosts from untrusted networks.; Restrict inbound and outbound TCP access to required peers only..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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