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…

Description

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."

Scores

EPSS (exploitation in 30 days)

35.0% · top 1.6% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (7)

• oval:org.mitre.oval:def:5965 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• http://www.recurity-labs.com/content/pub/Microsoft_Windows_CVE-2009-1926 (opens in a new tab)x_refsource_MISCx_transferred
• 36269 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 57797 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
• TA09-251A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
• MS09-048 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
• 20090909 TCP/IP Orphaned Connections Vulnerability (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2009-1926](https://trackcve.app/badge/CVE-2009-1926.svg)](https://trackcve.app/cve/CVE-2009-1926)

Record last updated 17 Oct 2024, 18:29 UTC.