Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2005-0356

Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with the timestamps option enabled allow remote attackers to cause a denial of service (connection loss) via a spoofed packet with a large timer value, which causes the host to discard later packets because they appear to be too old.

  • Published: May 31, 2005
  • Updated: Nov 9, 2025
  • CVE: CVE-2005-0356
  • 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
cisco / secure_access_control_server 3.2 3.2.x
cisco / mgx_8230 1.2.11 1.2.11.x
cisco / mgx_8250 1.2.10 1.2.10.x
cisco / secure_access_control_server 3.2.2 3.2.2.x
cisco / personal_assistant 1.3(2) 1.3(2).x
cisco / unity_server 2.2 2.2.x
cisco / secure_access_control_server 2.4 2.4.x
cisco / secure_access_control_server 3.1.1 3.1.1.x
cisco / personal_assistant 1.3(4) 1.3(4).x
cisco / unity_server 3.0 3.0.x
cisco / secure_access_control_server 2.6.3 2.6.3.x
cisco / interactive_voice_response - -
cisco / secure_access_control_server 2.42 2.42.x
cisco / call_manager 3.0 3.0.x
cisco / call_manager 3.1(3a) 3.1(3a).x
cisco / secure_access_control_server 3.3.2 3.3.2.x
cisco / unity_server 3.1 3.1.x
cisco / call_manager 1.0 1.0.x
cisco / unity_server 3.3 3.3.x
cisco / personal_assistant 1.3(3) 1.3(3).x
cisco / secure_access_control_server 2.1 2.1.x
cisco / secure_access_control_server 3.3(1) 3.3(1).x
cisco / secure_access_control_server 2.6.2 2.6.2.x
cisco / secure_access_control_server 2.3.6.1 2.3.6.1.x
cisco / support_tools - -
cisco / call_manager 3.2 3.2.x
cisco / call_manager 3.1(2) 3.1(2).x
cisco / personal_assistant 1.4(2) 1.4(2).x
cisco / unity_server 2.3 2.3.x
cisco / unity_server 3.2 3.2.x
cisco / secure_access_control_server 2.0 2.0.x
cisco / secure_access_control_server 3.0.1 3.0.1.x
cisco / secure_access_control_server 2.3 2.3.x
cisco / unity_server 2.1 2.1.x
cisco / unity_server 2.46 2.46.x
cisco / call_manager 3.3 3.3.x
cisco / web_collaboration_option - -
cisco / call_manager 2.0 2.0.x
cisco / secure_access_control_server 3.0 3.0.x
cisco / mgx_8250 1.2.11 1.2.11.x
cisco / remote_monitoring_suite_option - -
cisco / secure_access_control_server 3.0.3 3.0.3.x
cisco / unity_server 2.4 2.4.x
cisco / ip_contact_center_express - -
cisco / mgx_8230 1.2.10 1.2.10.x
cisco / personal_assistant 1.4(1) 1.4(1).x
cisco / secure_access_control_server 2.5 2.5.x
cisco / secure_access_control_server 2.6 2.6.x
cisco / call_manager 3.1 3.1.x
cisco / secure_access_control_server 3.2(1.20) 3.2(1.20).x
cisco / secure_access_control_server 3.1 3.1.x
cisco / intelligent_contact_manager 5.0 5.0.x
cisco / unity_server 2.0 2.0.x
cisco / secure_access_control_server 3.3.1 3.3.1.x
cisco / secure_access_control_server 3.3 3.3.x
cisco / secure_access_control_server 2.6.4 2.6.4.x
cisco / secure_access_control_server 3.2(3) 3.2(3).x
cisco / agent_desktop - -
cisco / e-mail_manager - -
cisco / meetingplace - -
cisco / secure_access_control_server 3.2.1 3.2.1.x
cisco / call_manager 4.0 4.0.x
cisco / call_manager 3.3(3) 3.3(3).x
cisco / secure_access_control_server 2.3.5.1 2.3.5.1.x
cisco / secure_access_control_server 3.2(1) 3.2(1).x
hitachi / alaxala ax ax.x
cisco / secure_access_control_server 3.2(2) 3.2(2).x
cisco / emergency_responder 1.1 1.1.x
cisco / ip_contact_center_enterprise - -
cisco / unity_server 4.0 4.0.x
cisco / personal_assistant 1.3(1) 1.3(1).x
cisco / ciscoworks_access_control_list_manager 1.5 1.5.x
cisco / ciscoworks_access_control_list_manager 1.6 1.6.x
cisco / ciscoworks_common_management_foundation 2.0 2.0.x
cisco / ciscoworks_common_management_foundation 2.1 2.1.x
cisco / ciscoworks_common_management_foundation 2.2 2.2.x
cisco / ciscoworks_common_services 2.2 2.2.x
cisco / ciscoworks_lms 1.3 1.3.x
cisco / ciscoworks_vpn_security_management_solution - -
cisco / ciscoworks_windows - -
cisco / webns 7.10_(05.07)s 7.10_(05.07)s.x
cisco / webns 7.20_(03.09)s 7.20_(03.09)s.x
cisco / webns 7.20_(03.10)s 7.20_(03.10)s.x
cisco / webns 7.30_(00.08)s 7.30_(00.08)s.x
cisco / webns 7.30_(00.09)s 7.30_(00.09)s.x
nortel / business_communications_manager 200 200.x
nortel / business_communications_manager 400 400.x
nortel / business_communications_manager 1000 1000.x
nortel / callpilot 200i 200i.x
nortel / callpilot 201i 201i.x
nortel / callpilot 702t 702t.x
nortel / callpilot 703t 703t.x
nortel / contact_center - -
cisco / content_services_switch_11000 - -
cisco / content_services_switch_11050 - -
cisco / content_services_switch_11150 - -
cisco / content_services_switch_11500 - -
cisco / content_services_switch_11501 - -
cisco / content_services_switch_11503 - -
cisco / content_services_switch_11506 - -
cisco / content_services_switch_11800 - -
nortel / 7220_wlan_access_point - -
nortel / 7250_wlan_access_point - -
nortel / ethernet_routing_switch_1612 - -
nortel / ethernet_routing_switch_1624 - -
nortel / ethernet_routing_switch_1648 - -
nortel / optical_metro_5000 - -
nortel / optical_metro_5100 - -
nortel / optical_metro_5200 - -
nortel / succession_communication_server_1000 - -
nortel / survivable_remote_gateway 1.0 1.0.x
nortel / universal_signaling_point 5200 5200.x
nortel / universal_signaling_point compact_lite compact_lite.x
cisco / ciscoworks_1105_hosting_solution_engine - -
cisco / ciscoworks_1105_wireless_lan_solution_engine - -
cisco / ciscoworks_cd1 1st 1st.x
cisco / ciscoworks_cd1 2nd 2nd.x
cisco / ciscoworks_cd1 3rd 3rd.x
cisco / ciscoworks_cd1 4th 4th.x
cisco / ciscoworks_cd1 5th 5th.x
cisco / ciscoworks_windows_wug - -
cisco / conference_connection 1.1(1) 1.1(1).x
cisco / conference_connection 1.2 1.2.x
freebsd / freebsd 1.1.5.1 1.1.5.1.x
freebsd / freebsd 2.0 2.0.x
freebsd / freebsd 2.0.5 2.0.5.x
freebsd / freebsd 2.1.0 2.1.0.x
freebsd / freebsd 2.1.5 2.1.5.x
freebsd / freebsd 2.1.6 2.1.6.x
freebsd / freebsd 2.1.6.1 2.1.6.1.x
freebsd / freebsd 2.1.7.1 2.1.7.1.x
freebsd / freebsd 2.2 2.2.x
freebsd / freebsd 2.2.2 2.2.2.x
freebsd / freebsd 2.2.3 2.2.3.x
freebsd / freebsd 2.2.4 2.2.4.x
freebsd / freebsd 2.2.5 2.2.5.x
freebsd / freebsd 2.2.6 2.2.6.x
freebsd / freebsd 2.2.8 2.2.8.x
freebsd / freebsd 3.0 3.0.x
freebsd / freebsd 3.0-releng 3.0-releng.x
freebsd / freebsd 3.1 3.1.x
freebsd / freebsd 3.2 3.2.x
freebsd / freebsd 3.3 3.3.x
freebsd / freebsd 3.4 3.4.x
freebsd / freebsd 3.5 3.5.x
freebsd / freebsd 3.5-stable 3.5-stable.x
freebsd / freebsd 3.5.1-stable 3.5.1-stable.x
freebsd / freebsd 3.5.1 3.5.1.x
freebsd / freebsd 3.5.1-release 3.5.1-release.x
freebsd / freebsd 4.0-alpha 4.0-alpha.x
freebsd / freebsd 4.0 4.0.x
freebsd / freebsd 4.0-releng 4.0-releng.x
freebsd / freebsd 4.1 4.1.x
freebsd / freebsd 4.1.1 4.1.1.x
freebsd / freebsd 4.1.1-release 4.1.1-release.x
freebsd / freebsd 4.1.1-stable 4.1.1-stable.x
freebsd / freebsd 4.2 4.2.x
freebsd / freebsd 4.2-stable 4.2-stable.x
freebsd / freebsd 4.3-release 4.3-release.x
freebsd / freebsd 4.3-releng 4.3-releng.x
freebsd / freebsd 4.3-stable 4.3-stable.x
freebsd / freebsd 4.3-release_p38 4.3-release_p38.x
freebsd / freebsd 4.3 4.3.x
freebsd / freebsd 4.4-stable 4.4-stable.x
freebsd / freebsd 4.4-release_p42 4.4-release_p42.x
freebsd / freebsd 4.4-releng 4.4-releng.x
freebsd / freebsd 4.4 4.4.x
freebsd / freebsd 4.5 4.5.x
freebsd / freebsd 4.5-release_p32 4.5-release_p32.x
freebsd / freebsd 4.5-stable 4.5-stable.x
freebsd / freebsd 4.5-release 4.5-release.x
freebsd / freebsd 4.5-releng 4.5-releng.x
freebsd / freebsd 4.6-release_p20 4.6-release_p20.x
freebsd / freebsd 4.6-stable 4.6-stable.x
freebsd / freebsd 4.6-release 4.6-release.x
freebsd / freebsd 4.6-releng 4.6-releng.x
freebsd / freebsd 4.6 4.6.x
freebsd / freebsd 4.6.2 4.6.2.x
freebsd / freebsd 4.7-release 4.7-release.x
freebsd / freebsd 4.7-releng 4.7-releng.x
freebsd / freebsd 4.7 4.7.x
freebsd / freebsd 4.7-release_p17 4.7-release_p17.x
freebsd / freebsd 4.7-stable 4.7-stable.x
freebsd / freebsd 4.8-release_p6 4.8-release_p6.x
freebsd / freebsd 4.8-pre-release 4.8-pre-release.x
freebsd / freebsd 4.8 4.8.x
freebsd / freebsd 4.8-releng 4.8-releng.x
freebsd / freebsd 4.9 4.9.x
freebsd / freebsd 4.9-pre-release 4.9-pre-release.x
freebsd / freebsd 4.9-releng 4.9-releng.x
freebsd / freebsd 4.10-release 4.10-release.x
freebsd / freebsd 4.10-release_p8 4.10-release_p8.x
freebsd / freebsd 4.10 4.10.x
freebsd / freebsd 4.10-releng 4.10-releng.x
freebsd / freebsd 4.11-release_p3 4.11-release_p3.x
freebsd / freebsd 4.11-releng 4.11-releng.x
freebsd / freebsd 4.11-stable 4.11-stable.x
freebsd / freebsd 5.0 5.0.x
freebsd / freebsd 5.0-alpha 5.0-alpha.x
freebsd / freebsd 5.0-releng 5.0-releng.x
freebsd / freebsd 5.0-release_p14 5.0-release_p14.x
freebsd / freebsd 5.1-release 5.1-release.x
freebsd / freebsd 5.1-alpha 5.1-alpha.x
freebsd / freebsd 5.1-releng 5.1-releng.x
freebsd / freebsd 5.1-release_p5 5.1-release_p5.x
freebsd / freebsd 5.1 5.1.x
freebsd / freebsd 5.2 5.2.x
freebsd / freebsd 5.2.1-releng 5.2.1-releng.x
freebsd / freebsd 5.2.1-release 5.2.1-release.x
freebsd / freebsd 5.3-stable 5.3-stable.x
freebsd / freebsd 5.3-releng 5.3-releng.x
freebsd / freebsd 5.3 5.3.x
freebsd / freebsd 5.3-release 5.3-release.x
freebsd / freebsd 5.4-pre-release 5.4-pre-release.x
freebsd / freebsd 5.4-release 5.4-release.x
microsoft / windows_2000 - -
microsoft / windows_2003_server enterprise enterprise.x
microsoft / windows_2003_server enterprise_64-bit enterprise_64-bit.x
microsoft / windows_2003_server r2 r2.x
microsoft / windows_2003_server standard standard.x
microsoft / windows_2003_server standard_64-bit standard_64-bit.x
microsoft / windows_2003_server web web.x
microsoft / windows_xp - -
openbsd / openbsd 3.0 3.0.x
openbsd / openbsd 3.1 3.1.x
openbsd / openbsd 3.2 3.2.x
openbsd / openbsd 3.3 3.3.x
openbsd / openbsd 3.4 3.4.x
openbsd / openbsd 3.5 3.5.x
openbsd / openbsd 3.6 3.6.x
alaxala / alaxala_networks ax5400s ax5400s.x
alaxala / alaxala_networks ax7800r ax7800r.x
alaxala / alaxala_networks ax7800s ax7800s.x
f5 / tmos 9.0.5 9.0.5.x
f5 / tmos 4.5.12 4.5.12.x
f5 / tmos 9.0.3 9.0.3.x
hitachi / gr4000 - -
cisco / sn_5428_storage_router 2-3.3.1-k9 2-3.3.1-k9.x
f5 / tmos 4.6 4.6.x
f5 / tmos 9.0.2 9.0.2.x
cisco / sn_5428_storage_router 2-3.3.2-k9 2-3.3.2-k9.x
f5 / tmos 4.5 4.5.x
yamaha / rt250i - -
f5 / tmos 4.5.6 4.5.6.x
yamaha / rt105 - -
yamaha / rtx2000 - -
cisco / aironet_ap350 - -
cisco / sn_5428_storage_router 2.5.1-k9 2.5.1-k9.x
cisco / sn_5420_storage_router - -
yamaha / rtx1000 - -
hitachi / gr3000 - -
yamaha / rt57i - -
yamaha / rtv700 - -
f5 / tmos 4.3 4.3.x
yamaha / rtx1500 - -
cisco / sn_5428_storage_router 3.3.2-k9 3.3.2-k9.x
f5 / tmos 4.0 4.0.x
f5 / tmos 4.6.2 4.6.2.x
cisco / sn_5428_storage_router 3.2.2-k9 3.2.2-k9.x
yamaha / rtx1100 - -
f5 / tmos 9.0 9.0.x
f5 / tmos 4.5.10 4.5.10.x
hitachi / gs4000 - -
f5 / tmos 4.2 4.2.x
f5 / tmos 4.5.11 4.5.11.x
cisco / aironet_ap1200 - -
cisco / sn_5428_storage_router 3.3.1-k9 3.3.1-k9.x
f5 / tmos 9.0.1 9.0.1.x
f5 / tmos 4.4 4.4.x
f5 / tmos 9.0.4 9.0.4.x
f5 / tmos 4.5.9 4.5.9.x
cisco / sn_5428_storage_router 3.2.1-k9 3.2.1-k9.x
yamaha / rt300i - -
cisco / sn_5420_storage_router_firmware 1.1(2) 1.1(2).x
cisco / sn_5420_storage_router_firmware 1.1(7) 1.1(7).x
cisco / sn_5420_storage_router_firmware 1.1(3) 1.1(3).x
cisco / sn_5420_storage_router_firmware 1.1(5) 1.1(5).x
cisco / sn_5420_storage_router_firmware 1.1.3 1.1.3.x
cisco / sn_5420_storage_router_firmware 1.1(4) 1.1(4).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.