CVE-2009-1926: n/a vulnerability

CVE-2009-1926: Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold...

Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2 allow remote attackers to cause a denial of service (TCP outage) via a series of TCP sessions that have pending data and a (1) small or (2) zero receive window size, and remain in the FIN-WAIT-1 or FIN-WAIT-2 state indefinitely, aka "TCP/IP Orphaned Connections Vulnerability."

UnknownCVSS not scoredNot KEV-listedUpdatedOct 17, 2024, 18:29 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Windows TCP/IP flaw that can let a remote attacker disrupt network connectivity on affected legacy systems. The reported impact is denial of service, not data theft or code execution. Exposure matters most for internet-facing or externally reachable Windows 2000, XP, Server 2003, Vista, and Server 2008 systems. Likely exposure is limited to legacy Microsoft Windows versions listed in the CVE. Internet-facing services or systems reachable from untrusted networks carry the greatest business risk. Modern supported Windows versions are not named in the provided source bundle. Prioritize remediation for any exposed legacy Windows host. The main risk is service disruption, but unsupported operating systems increase operational and compliance risk. Internal-only, well-segmented systems are lower urgency than internet-facing assets. Mitigation focus: Apply Microsoft MS09-048 guidance where applicable.; Retire or isolate unsupported Windows versions named in the CVE.; Restrict inbound TCP access to trusted networks only..

Prepared: Jun 28, 2026, 10:26 UTC (UTC+00:00)

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

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2009-1926 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 8, 2009, 22:00 UTC (UTC+00:00)

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

3Source links

CVSS and timeline data

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

Source materials

CVE List V5 sourceCVE List V5
oval:org.mitre.oval:def:5965CVE reference · vdb-entry, signature
MS09-048CVE reference · vendor-advisory, x_refsource_MS

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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