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."
Published Sep 8, 2009
7.8
HIGHCVSS 2.0
EPSS 35.04%
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."
Affected products
No data.
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No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jan 11, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (28 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 35.04% (0.35042) | 98.40th | v5 (v2026.06.15) |
| Jun 15, 2026 | 35.04% (0.35042) | 98.22th | v5 (v2026.06.15) |
| Jan 28, 2026 | 70.54% (0.70537) | 98.65th | v4 (v2025.03.14) |
| Dec 28, 2025 | 72.26% (0.72259) | 98.70th | v4 (v2025.03.14) |
| Dec 27, 2025 | 70.37% (0.70368) | 98.64th | v4 (v2025.03.14) |
| Oct 28, 2025 | 72.26% (0.72259) | 98.69th | v4 (v2025.03.14) |
| Oct 27, 2025 | 70.37% (0.70368) | 98.62th | v4 (v2025.03.14) |
| Oct 1, 2025 | 72.26% (0.72259) | 98.71th | v4 (v2025.03.14) |
| Mar 30, 2025 | 70.37% (0.70368) | 98.58th | v4 (v2025.03.14) |
| Mar 29, 2025 | 63.49% (0.63489) | 97.76th | v4 (v2025.03.14) |
| Mar 17, 2025 | 70.37% (0.70368) | 98.58th | v4 (v2025.03.14) |
| Feb 11, 2025 | 91.27% (0.91265) | 99.16th | v3 (v2023.03.01) |
| Dec 17, 2024 | 89.56% (0.89556) | 99.01th | v3 (v2023.03.01) |
| Apr 18, 2024 | 83.86% (0.83857) | 98.42th | v3 (v2023.03.01) |
| Mar 8, 2024 | 86.79% (0.86786) | 98.52th | v3 (v2023.03.01) |
| Jan 26, 2024 | 89.10% (0.89096) | 98.50th | v3 (v2023.03.01) |
| Oct 27, 2023 | 92.32% (0.92319) | 98.66th | v3 (v2023.03.01) |
| Sep 11, 2023 | 93.42% (0.93422) | 98.75th | v3 (v2023.03.01) |
| Jul 28, 2023 | 94.28% (0.94284) | 98.83th | v3 (v2023.03.01) |
| Jun 14, 2023 | 95.49% (0.95490) | 99.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 95.91% (0.95909) | 99.05th | v3 (v2023.03.01) |
| Mar 6, 2023 | 16.86% (0.16864) | 96.19th | v2 (v2022.01.01) |
| Dec 9, 2022 | 16.86% (0.16864) | 96.08th | v2 (v2022.01.01) |
| Aug 3, 2022 | 20.08% (0.20084) | 96.24th | v2 (v2022.01.01) |
| Jul 18, 2022 | 21.60% (0.21599) | 96.39th | v2 (v2022.01.01) |
| Jul 17, 2022 | 1.32% (0.01319) | 70.15th | v2 (v2022.01.01) |
| May 30, 2022 | 21.60% (0.21599) | 96.32th | v2 (v2022.01.01) |
| Feb 4, 2022 | 35.31% (0.35309) | 96.80th | v2 (v2022.01.01) |
No CWE recorded.
References (7)
- http://osvdb.org/57797 vdb-entryx_refsource_OSVDB
- http://www.recurity-labs.com/content/pub/Microsoft_Windows_CVE-2009-1926 x_refsource_MISC
- http://www.securityfocus.com/archive/1/506331/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/36269 vdb-entryx_refsource_BID
- http://www.us-cert.gov/cas/techalerts/TA09-251A.html third-party-advisoryx_refsource_CERTUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-048 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5965 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/57797 | vdb-entryx_refsource_OSVDB | |
| http://www.recurity-labs.com/content/pub/Microsoft_Windows_CVE-2009-1926 | x_refsource_MISC | |
| http://www.securityfocus.com/archive/1/506331/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/36269 | vdb-entryx_refsource_BID | |
| http://www.us-cert.gov/cas/techalerts/TA09-251A.html | third-party-advisoryx_refsource_CERTUS Government Resource | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-048 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5965 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.