Vulnerability Database

328,181

Total vulnerabilities in the database

CVE-2004-0230

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.

  • Published: Aug 18, 2004
  • Updated: Nov 9, 2025
  • CVE: CVE-2004-0230
  • Severity: Medium
  • Exploit:

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:N/I:N/A:P

No CWE or OWASP classifications available.

Software From Fixed in
oracle / solaris 11 11.x
oracle / solaris 10 10.x
openpgp / openpgp 2.6.2 2.6.2.x
mcafee / network_data_loss_prevention 9.2.0 9.2.0.x
mcafee / network_data_loss_prevention - 8.6.x
mcafee / network_data_loss_prevention 9.2.1 9.2.1.x
mcafee / network_data_loss_prevention 9.2.2 9.2.2.x
netbsd / netbsd 1.5.3 1.5.3.x
netbsd / netbsd 1.6 1.6.x
netbsd / netbsd 1.5 1.5.x
netbsd / netbsd 1.6.1 1.6.1.x
netbsd / netbsd 1.6.2 1.6.2.x
netbsd / netbsd 1.5.1 1.5.1.x
netbsd / netbsd 1.5.2 1.5.2.x
netbsd / netbsd 2.0 2.0.x
xinuos / openserver 5.0.7 5.0.7.x
xinuos / openserver 5.0.6 5.0.6.x
xinuos / unixware 7.1.3 7.1.3.x
xinuos / unixware 7.1.1 7.1.1.x
juniper / junos 12.2-r6 12.2-r6.x
juniper / junos 12.1x44-d20 12.1x44-d20.x
juniper / junos 12.2-r4 12.2-r4.x
juniper / junos 12.3-r2 12.3-r2.x
juniper / junos 13.3-r1 13.3-r1.x
juniper / junos 11.4-r1 11.4-r1.x
juniper / junos 11.4-r6 11.4-r6.x
juniper / junos 11.4-r9 11.4-r9.x
juniper / junos 12.1x45-d20 12.1x45-d20.x
juniper / junos 12.2-r1 12.2-r1.x
juniper / junos 12.2-r3 12.2-r3.x
juniper / junos 12.2-r7 12.2-r7.x
juniper / junos 12.3-r1 12.3-r1.x
juniper / junos 12.3-r4 12.3-r4.x
juniper / junos 13.1-r1 13.1-r1.x
juniper / junos 13.1-r2 13.1-r2.x
juniper / junos 13.1-r3 13.1-r3.x
juniper / junos 13.2-r3 13.2-r3.x
juniper / junos 11.4-r10 11.4-r10.x
juniper / junos 11.4-r2 11.4-r2.x
juniper / junos 11.4-r3 11.4-r3.x
juniper / junos 11.4-r4 11.4-r4.x
juniper / junos 11.4-r5 11.4-r5.x
juniper / junos 11.4-r7 11.4-r7.x
juniper / junos 11.4-r8 11.4-r8.x
juniper / junos 11.4x27 11.4x27.x
juniper / junos 12.1r 12.1r.x
juniper / junos 12.1x44-d10 12.1x44-d10.x
juniper / junos 12.1x44-d15 12.1x44-d15.x
juniper / junos 12.1x44-d25 12.1x44-d25.x
juniper / junos 12.1x44-d30 12.1x44-d30.x
juniper / junos 12.1x44-d35 12.1x44-d35.x
juniper / junos 12.1x45-d10 12.1x45-d10.x
juniper / junos 12.1x45-d15 12.1x45-d15.x
juniper / junos 12.1x46-d10 12.1x46-d10.x
juniper / junos 12.1x46-d15 12.1x46-d15.x
juniper / junos 12.2-r2 12.2-r2.x
juniper / junos 12.2-r5 12.2-r5.x
juniper / junos 12.3-r3 12.3-r3.x
juniper / junos 12.3-r5 12.3-r5.x
juniper / junos 13.2-r1 13.2-r1.x
juniper / junos 13.2-r2 13.2-r2.x
juniper / junos 11.4 11.4.x
juniper / junos - 11.4
juniper / junos 11.4r13-s2 11.4r13-s2.x
juniper / junos 12.1 12.1.x
juniper / junos 12.1x44 12.1x44.x
juniper / junos 12.1x45 12.1x45.x
juniper / junos 12.1x46 12.1x46.x
juniper / junos 12.1x47 12.1x47.x
juniper / junos 12.2 12.2.x
juniper / junos 12.3 12.3.x
juniper / junos 13.1 13.1.x
juniper / junos 13.2 13.2.x
juniper / junos 13.3 13.3.x
microsoft / windows_xp --sp2 --sp2.x
microsoft / windows_2000 --sp4 --sp4.x
microsoft / windows_xp --sp1 --sp1.x
microsoft / windows_server_2003 --sp1 --sp1.x
microsoft / windows_2000 --sp3 --sp3.x

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.