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.
CVE-2004-0230
NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
- High exploitation likelihood — EPSS 81%
CISA-KEV: Not listedEPSS: 81%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 99.6%
- KEV
- Not listed
Published
August 18, 2004
Last Modified
June 16, 2026
References (58)
- cve@mitreftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2004-006.txt.asc
- cve@mitreftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.3/SCOSA-2005.3.txt
- cve@mitreftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.9/SCOSA-2005.9.txt
- cve@mitreftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.14/SCOSA-2005.14.txt
- cve@mitreftp://patches.sgi.com/support/free/security/advisories/20040403-01-A.asc
- cve@mitrehttp://kb.juniper.net/JSA10638
- cve@mitrehttp://marc.info/?l=bugtraq&m=108302060014745&w=2
- cve@mitrehttp://marc.info/?l=bugtraq&m=108506952116653&w=2
- cve@mitrehttp://secunia.com/advisories/11440
- cve@mitrehttp://secunia.com/advisories/11458
- cve@mitrehttp://secunia.com/advisories/22341
- cve@mitrehttp://www.cisco.com/warp/public/707/cisco-sa-20040420-tcp-ios.shtml
- cve@mitrehttp://www.kb.cert.org/vuls/id/415294
- cve@mitrehttp://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
- cve@mitrehttp://www.osvdb.org/4030
Data Freshness Timeline
(refreshed 1× in last 7d / 8× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 17:22 UTCOSV refresh
- 2026-07-06 02:19 UTCEPSS rescore
- 2026-07-02 14:00 UTCEPSS rescore
- 2026-06-27 03:04 UTCEPSS rescore
- 2026-06-23 21:29 UTCEPSS rescore
- 2026-06-22 23:59 UTCEG score recompute
- 2026-06-22 23:59 UTCGHSA enrichment
- 2026-06-22 23:58 UTCNVD updatefirst tracked
Publicly available exploits
(7 references)Working exploit code is in the public domain (7 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-942✓ verifiedFirst seen Apr 17, 2005
Microsoft Windows - Malformed IP Options Denial of Service (MS05-019)
Open source ↗ - Exploit-DBEDB-24033✓ verifiedFirst seen Apr 23, 2004
Multiple Vendor - TCP Sequence Number Approximation (4)
Open source ↗ - Exploit-DBEDB-291✓ verifiedFirst seen Apr 23, 2004
TCP Connection Reset - Remote Denial of Service
Open source ↗ - Exploit-DBEDB-276✓ verifiedFirst seen Apr 22, 2004
Microsoft Windows XP/2000 - TCP Connection Reset
Open source ↗ - Exploit-DBEDB-24032✓ verifiedFirst seen Apr 20, 2004
Multiple Vendor - TCP Sequence Number Approximation (3)
Open source ↗ - Exploit-DBEDB-24031✓ verifiedFirst seen Apr 20, 2004
Multiple Vendor - TCP Sequence Number Approximation (2)
Open source ↗ - Exploit-DBEDB-24030✓ verifiedFirst seen Mar 5, 2004
Multiple Vendor - TCP Sequence Number Approximation (1)
Open source ↗
Frequently asked(4)
What is CVE-2004-0230?
CVE-2004-0230 is a none vulnerability published on August 18, 2004. 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.
When was CVE-2004-0230 disclosed?
CVE-2004-0230 was first published in the National Vulnerability Database on August 18, 2004, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2004-0230 actively exploited?
CVE-2004-0230 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2004-0230?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2004-0230, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2004-0230
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