---
title: "CVE-2004-0230: TCP, when using a large Window Size, makes… | CubePath"
description: "TCP, when using a large Window Size, makes it easier for remote attackers to guess sequence numbers and cause a denial of service (connection loss)…"
language: en
source: https://cubepath.com/security/cve/CVE-2004-0230
---

# CVE-2004-0230: TCP, when using a large Window Size, makes… | CubePath

## Description

TCP, when using a large Window Size, makes it easier for remote attackers to guess sequence numbers and cause a denial of service (connection loss) to persistent TCP connections by repeatedly injecting a TCP RST packet, especially in protocols that use long-lived connections, such as BGP.

Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2004-0230)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.80286 (80.3% probability)

Percentile

99.6%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA assessment as of Oct 9, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Automatable

yes

Technical impact

partial

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [oval:org.mitre.oval:def:2689](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2689)  (oval.cisecurity.org) vdb-entry signature
- [oval:org.mitre.oval:def:3508](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3508)  (oval.cisecurity.org) vdb-entry signature
- [TA04-111A](http://www.us-cert.gov/cas/techalerts/TA04-111A.html)  (us-cert.gov) third-party-advisory
- [oval:org.mitre.oval:def:5711](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5711)  (oval.cisecurity.org) vdb-entry signature
- [20040425 Perl code exploting TCP not checking RST ACK.](http://marc.info/?l=bugtraq&m=108302060014745&w=2)  (marc.info) mailing-list
- [SSRT061264](http://www.securityfocus.com/archive/1/449179/100/0/threaded)  (securityfocus.com) vendor-advisory
- [uniras.gov.uk/vuls/2004/236929/index.htm](http://www.uniras.gov.uk/vuls/2004/236929/index.htm)
- [MS06-064](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-064)  (docs.microsoft.com) vendor-advisory
- [11440](http://secunia.com/advisories/11440)  (secunia.com) third-party-advisory
- [kb.juniper.net/JSA10638](http://kb.juniper.net/JSA10638)
- [kc.mcafee.com/corporate/index?page=content&id=SB10053](https://kc.mcafee.com/corporate/index?page=content&id=SB10053)
- [oracle.com/technetwork/topics/security/cpujan2015-1972971.h…](http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html)
- [VU#415294](http://www.kb.cert.org/vuls/id/415294)  (kb.cert.org) third-party-advisory
- [SSRT4696](http://marc.info/?l=bugtraq&m=108506952116653&w=2)  (marc.info) vendor-advisory
- [MS05-019](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2005/ms05-019)  (docs.microsoft.com) vendor-advisory
- [20040420 TCP Vulnerabilities in Multiple IOS-Based Cisco Products](http://www.cisco.com/warp/public/707/cisco-sa-20040420-tcp-ios.shtml)  (cisco.com) vendor-advisory
- [10183](http://www.securityfocus.com/bid/10183)  (securityfocus.com) vdb-entry
- [oval:org.mitre.oval:def:4791](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4791)  (oval.cisecurity.org) vdb-entry signature
- [oval:org.mitre.oval:def:270](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A270)  (oval.cisecurity.org) vdb-entry signature
- [tcp-rst-dos(15886)](https://exchange.xforce.ibmcloud.com/vulnerabilities/15886)  (exchange.xforce.ibmcloud.com) vdb-entry
- [4030](http://www.osvdb.org/4030)  (osvdb.org) vdb-entry
- [22341](http://secunia.com/advisories/22341)  (secunia.com) third-party-advisory
- [ADV-2006-3983](http://www.vupen.com/english/advisories/2006/3983)  (vupen.com) vdb-entry
- [11458](http://secunia.com/advisories/11458)  (secunia.com) third-party-advisory

## Timeline

1. ID reserved Mar 17, 2004
2. Record published May 5, 2004
3. Record last updated Oct 9, 2026

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:00 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)