Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2023-44487

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
ietf / http 2.0 2.0.x
Go icon golang.org/x/net - 0.17.0
nghttp2 / nghttp2 - 1.57.0
netty / netty - 4.1.100
envoyproxy / envoy 1.27.0 1.27.0.x
envoyproxy / envoy 1.26.4 1.26.4.x
envoyproxy / envoy 1.25.9 1.25.9.x
envoyproxy / envoy 1.24.10 1.24.10.x
eclipse / jetty 12.0.0 12.0.2
eclipse / jetty 11.0.0 11.0.17
eclipse / jetty 10.0.0 10.0.17
eclipse / jetty - 9.4.53
caddyserver / caddy - 2.7.5
golang / http2 - 0.17.0
golang / go 1.21.0 1.21.3
golang / go - 1.20.10
golang / networking - 0.17.0
f5 / big-ip_analytics 13.1.0 13.1.5.x
f5 / big-ip_policy_enforcement_manager 13.1.0 13.1.5.x
f5 / big-ip_local_traffic_manager 13.1.0 13.1.5.x
f5 / big-ip_link_controller 13.1.0 13.1.5.x
f5 / big-ip_global_traffic_manager 13.1.0 13.1.5.x
f5 / big-ip_fraud_protection_service 13.1.0 13.1.5.x
f5 / big-ip_domain_name_system 13.1.0 13.1.5.x
f5 / big-ip_application_security_manager 13.1.0 13.1.5.x
f5 / big-ip_application_acceleration_manager 13.1.0 13.1.5.x
f5 / big-ip_advanced_firewall_manager 13.1.0 13.1.5.x
f5 / big-ip_access_policy_manager 13.1.0 13.1.5.x
f5 / big-ip_advanced_web_application_firewall 13.1.0 13.1.5.x
f5 / big-ip_application_visibility_and_reporting 13.1.0 13.1.5.x
f5 / big-ip_carrier-grade_nat 13.1.0 13.1.5.x
f5 / big-ip_ddos_hybrid_defender 13.1.0 13.1.5.x
f5 / big-ip_ssl_orchestrator 13.1.0 13.1.5.x
f5 / big-ip_webaccelerator 13.1.0 13.1.5.x
f5 / big-ip_websafe 13.1.0 13.1.5.x
f5 / big-ip_advanced_firewall_manager 14.1.0 14.1.5.x
f5 / big-ip_analytics 14.1.0 14.1.5.x
f5 / big-ip_access_policy_manager 14.1.0 14.1.5.x
f5 / big-ip_application_security_manager 14.1.0 14.1.5.x
f5 / big-ip_domain_name_system 14.1.0 14.1.5.x
f5 / big-ip_fraud_protection_service 14.1.0 14.1.5.x
f5 / big-ip_global_traffic_manager 14.1.0 14.1.5.x
f5 / big-ip_link_controller 14.1.0 14.1.5.x
f5 / big-ip_local_traffic_manager 14.1.0 14.1.5.x
f5 / big-ip_policy_enforcement_manager 14.1.0 14.1.5.x
f5 / big-ip_application_acceleration_manager 14.1.0 14.1.5.x
f5 / big-ip_access_policy_manager 17.1.0 17.1.0.x
f5 / big-ip_advanced_firewall_manager 17.1.0 17.1.0.x
f5 / big-ip_advanced_web_application_firewall 17.1.0 17.1.0.x
f5 / big-ip_analytics 17.1.0 17.1.0.x
f5 / big-ip_application_acceleration_manager 17.1.0 17.1.0.x
f5 / big-ip_application_security_manager 17.1.0 17.1.0.x
f5 / big-ip_application_visibility_and_reporting 17.1.0 17.1.0.x
f5 / big-ip_carrier-grade_nat 17.1.0 17.1.0.x
f5 / big-ip_ddos_hybrid_defender 17.1.0 17.1.0.x
f5 / big-ip_domain_name_system 17.1.0 17.1.0.x
f5 / big-ip_fraud_protection_service 17.1.0 17.1.0.x
f5 / big-ip_global_traffic_manager 17.1.0 17.1.0.x
f5 / big-ip_link_controller 17.1.0 17.1.0.x
f5 / big-ip_local_traffic_manager 17.1.0 17.1.0.x
f5 / big-ip_policy_enforcement_manager 17.1.0 17.1.0.x
f5 / big-ip_ssl_orchestrator 17.1.0 17.1.0.x
f5 / big-ip_webaccelerator 17.1.0 17.1.0.x
f5 / big-ip_websafe 17.1.0 17.1.0.x
f5 / big-ip_advanced_web_application_firewall 14.1.0 14.1.5.x
f5 / big-ip_application_visibility_and_reporting 14.1.0 14.1.5.x
f5 / big-ip_carrier-grade_nat 14.1.0 14.1.5.x
f5 / big-ip_ddos_hybrid_defender 14.1.0 14.1.5.x
f5 / big-ip_ssl_orchestrator 14.1.0 14.1.5.x
f5 / big-ip_webaccelerator 14.1.0 14.1.5.x
f5 / big-ip_websafe 14.1.0 14.1.5.x
f5 / big-ip_access_policy_manager 15.1.0 15.1.10.x
f5 / big-ip_access_policy_manager 16.1.0 16.1.4.x
f5 / big-ip_advanced_firewall_manager 15.1.0 15.1.10.x
f5 / big-ip_advanced_firewall_manager 16.1.0 16.1.4.x
f5 / big-ip_advanced_web_application_firewall 15.1.0 15.1.10.x
f5 / big-ip_advanced_web_application_firewall 16.1.0 16.1.4.x
f5 / big-ip_analytics 15.1.0 15.1.10.x
f5 / big-ip_analytics 16.1.0 16.1.4.x
f5 / big-ip_application_acceleration_manager 15.1.0 15.1.10.x
f5 / big-ip_application_acceleration_manager 16.1.0 16.1.4.x
f5 / big-ip_application_security_manager 15.1.0 15.1.10.x
f5 / big-ip_application_security_manager 16.1.0 16.1.4.x
f5 / big-ip_application_visibility_and_reporting 15.1.0 15.1.10.x
f5 / big-ip_application_visibility_and_reporting 16.1.0 16.1.4.x
f5 / big-ip_carrier-grade_nat 15.1.0 15.1.10.x
f5 / big-ip_carrier-grade_nat 16.1.0 16.1.4.x
f5 / big-ip_ddos_hybrid_defender 15.1.0 15.1.10.x
f5 / big-ip_ddos_hybrid_defender 16.1.0 16.1.4.x
f5 / big-ip_domain_name_system 15.1.0 15.1.10.x
f5 / big-ip_domain_name_system 16.1.0 16.1.4.x
f5 / big-ip_fraud_protection_service 15.1.0 15.1.10.x
f5 / big-ip_fraud_protection_service 16.1.0 16.1.4.x
f5 / big-ip_global_traffic_manager 15.1.0 15.1.10.x
f5 / big-ip_global_traffic_manager 16.1.0 16.1.4.x
f5 / big-ip_link_controller 15.1.0 15.1.10.x
f5 / big-ip_link_controller 16.1.0 16.1.4.x
f5 / big-ip_local_traffic_manager 15.1.0 15.1.10.x
f5 / big-ip_local_traffic_manager 16.1.0 16.1.4.x
f5 / big-ip_policy_enforcement_manager 15.1.0 15.1.10.x
f5 / big-ip_policy_enforcement_manager 16.1.0 16.1.4.x
f5 / big-ip_ssl_orchestrator 15.1.0 15.1.10.x
f5 / big-ip_ssl_orchestrator 16.1.0 16.1.4.x
f5 / big-ip_webaccelerator 15.1.0 15.1.10.x
f5 / big-ip_webaccelerator 16.1.0 16.1.4.x
f5 / big-ip_websafe 15.1.0 15.1.10.x
f5 / big-ip_websafe 16.1.0 16.1.4.x
f5 / nginx_plus r30 r30.x
f5 / nginx_plus r25 r29
f5 / nginx_plus r29 r29.x
f5 / big-ip_next 20.0.1 20.0.1.x
f5 / big-ip_next_service_proxy_for_kubernetes 1.5.0 1.8.2.x
f5 / nginx 1.9.5 1.25.2.x
f5 / nginx_ingress_controller 2.0.0 2.4.2.x
f5 / nginx_ingress_controller 3.0.0 3.3.0.x
apache / tomcat 11.0.0-milestone1 11.0.0-milestone1.x
apache / tomcat 11.0.0-milestone2 11.0.0-milestone2.x
apache / tomcat 11.0.0-milestone4 11.0.0-milestone4.x
apache / tomcat 11.0.0-milestone3 11.0.0-milestone3.x
apache / tomcat 11.0.0-milestone5 11.0.0-milestone5.x
apache / tomcat 11.0.0-milestone7 11.0.0-milestone7.x
apache / tomcat 11.0.0-milestone8 11.0.0-milestone8.x
apache / tomcat 11.0.0-milestone9 11.0.0-milestone9.x
apache / tomcat 11.0.0-milestone10 11.0.0-milestone10.x
apache / tomcat 11.0.0-milestone6 11.0.0-milestone6.x
apache / tomcat 11.0.0-milestone11 11.0.0-milestone11.x
apache / tomcat 9.0.0 9.0.80.x
apache / tomcat 8.5.0 8.5.93.x
apache / tomcat 10.1.0 10.1.13.x
apple / swiftnio_http/2 - 1.28.0
grpc / grpc 1.57.0 1.57.0.x
grpc / grpc 1.58.0 1.58.3
grpc / grpc - 1.56.3
microsoft / windows_10_22h2 - 10.0.19045.3570
microsoft / windows_10_1809 - 10.0.17763.4974
microsoft / windows_11_21h2 - 10.0.22000.2538
microsoft / windows_11_22h2 - 10.0.22621.2428
microsoft / windows_10_1607 - 10.0.14393.6351
microsoft / .net 7.0.0 7.0.12
microsoft / windows_10_21h2 - 10.0.19044.3570
microsoft / visual_studio_2022 17.7 17.7.5
microsoft / visual_studio_2022 17.6 17.6.8
microsoft / visual_studio_2022 17.4 17.4.12
microsoft / visual_studio_2022 17.0 17.2.20
microsoft / asp.net_core 6.0.0 6.0.23
microsoft / asp.net_core 7.0.0 7.0.12
microsoft / .net 6.0.0 6.0.23
microsoft / azure_kubernetes_service - 2023-10-08
microsoft / cbl-mariner - 2023-10-11
dena / h2o - 2023-10-10
facebook / proxygen - 2023.10.16.00
apache / traffic_server 9.0.0 9.2.3
apache / traffic_server 8.0.0 8.1.9
apache / apisix - 3.6.1
amazon / opensearch_data_prepper - 2.5.0
debian / debian_linux 10.0 10.0.x
debian / debian_linux 11.0 11.0.x
debian / debian_linux 12.0 12.0.x
kazu-yamamoto / http2 - 4.2.2
istio / istio 1.19.0 1.19.1
istio / istio 1.18.0 1.18.3
istio / istio - 1.17.6
varnish_cache_project / varnish_cache - 2023-10-10
traefik / traefik 3.0.0-beta3 3.0.0-beta3.x
traefik / traefik 3.0.0-beta2 3.0.0-beta2.x
traefik / traefik 3.0.0-beta1 3.0.0-beta1.x
traefik / traefik - 2.10.5
projectcontour / contour - 2023-10-11
linkerd / linkerd 2.14.0 2.14.0.x
linkerd / linkerd 2.14.1 2.14.1.x
linkerd / linkerd 2.13.1 2.13.1.x
linkerd / linkerd 2.13.0 2.13.0.x
linkerd / linkerd 2.12.0 2.12.5.x
linecorp / armeria - 1.26.0
redhat / enterprise_linux 6.0 6.0.x
redhat / jboss_enterprise_application_platform 6.0.0 6.0.0.x
redhat / jboss_fuse 6.0.0 6.0.0.x
redhat / satellite 6.0 6.0.x
redhat / jboss_enterprise_application_platform 7.0.0 7.0.0.x
redhat / decision_manager 7.0 7.0.x
redhat / enterprise_linux 8.0 8.0.x
redhat / single_sign-on 7.0 7.0.x
redhat / jboss_fuse 7.0.0 7.0.0.x
redhat / process_automation 7.0 7.0.x
redhat / jboss_data_grid 7.0.0 7.0.0.x
redhat / quay 3.0.0 3.0.0.x
redhat / openshift_container_platform 4.0 4.0.x
redhat / openstack_platform 16.1 16.1.x
redhat / advanced_cluster_management_for_kubernetes 2.0 2.0.x
redhat / openshift_service_mesh 2.0 2.0.x
redhat / jboss_a-mq 7 7.x
redhat / 3scale_api_management_platform 2.0 2.0.x
redhat / ceph_storage 5.0 5.0.x
redhat / openstack_platform 16.2 16.2.x
redhat / enterprise_linux 9.0 9.0.x
redhat / ansible_automation_platform 2.0 2.0.x
redhat / migration_toolkit_for_applications 6.0 6.0.x
redhat / build_of_optaplanner 8.0 8.0.x
redhat / advanced_cluster_security 4.0 4.0.x
redhat / advanced_cluster_security 3.0 3.0.x
redhat / cryostat 2.0 2.0.x
redhat / openshift_virtualization 4 4.x
redhat / certification_for_red_hat_enterprise_linux 9.0 9.0.x
redhat / certification_for_red_hat_enterprise_linux 8.0 8.0.x
redhat / openstack_platform 17.1 17.1.x
redhat / service_interconnect 1.0 1.0.x
redhat / service_telemetry_framework 1.5 1.5.x
fedoraproject / fedora 38 38.x
akka / http_server - 10.5.3
konghq / kong_gateway - 3.4.2
fedoraproject / fedora 37 37.x
jenkins / jenkins - 2.427.x
jenkins / jenkins - 2.414.2.x
apache / solr - 9.4.0
nodejs / node.js 18.0.0 18.18.2
nodejs / node.js 20.0.0 20.8.1
Go icon google.golang.org/grpc 1.58.0 1.58.3
Go icon google.golang.org/grpc 1.57.0 1.57.1
Go icon google.golang.org/grpc - 1.56.3
grpc / grpc - 1.59.2.x
openresty / openresty - 1.21.4.3
Maven icon org.apache.tomcat / tomcat 11.0.0-M1 11.0.0-M12
Maven icon org.apache.tomcat / tomcat 10.0.0 10.1.14
Maven icon org.apache.tomcat / tomcat 9.0.0 9.0.81
Maven icon org.apache.tomcat / tomcat 8.5.0 8.5.94
Maven icon org.apache.tomcat.embed / tomcat-embed-core 11.0.0-M1 11.0.0-M12
Maven icon org.apache.tomcat.embed / tomcat-embed-core 10.0.0 10.1.14
Maven icon org.apache.tomcat.embed / tomcat-embed-core 9.0.0 9.0.81
Maven icon org.apache.tomcat.embed / tomcat-embed-core 8.5.0 8.5.94
cisco / prime_infrastructure - 3.10.4
cisco / secure_malware_analytics - 2.19.2
cisco / secure_dynamic_attributes_connector - 2.2.0
cisco / firepower_threat_defense - 7.4.2
cisco / fog_director - 1.22
cisco / ios_xe - 17.15.1
cisco / prime_network_registrar - 11.2
cisco / prime_cable_provisioning - 7.2.1
cisco / prime_access_registrar - 9.3.3
cisco / iot_field_network_director - 4.11.0
cisco / ios_xr - 7.11.2
cisco / crosswork_zero_touch_provisioning - 6.0.0
cisco / crosswork_data_gateway - 4.1.3
cisco / expressway - x14.3.3
cisco / connected_mobile_experiences - 11.1
cisco / telepresence_video_communication_server - x14.3.3
cisco / unified_contact_center_enterprise_-_live_data_server - 12.6.2
cisco / ultra_cloud_core_-_session_management_function - 2024.02.0
cisco / ultra_cloud_core_-_serving_gateway_function - 2024.02.0
cisco / ultra_cloud_core_-_policy_control_function - 2024.01.0
cisco / ultra_cloud_core_-_policy_control_function 2024.01.0 2024.01.0.x
cisco / secure_web_appliance_firmware - 15.1.0
cisco / nx-os - 10.2\(7\)
cisco / nx-os 10.3\(1\) 10.3\(5\)
cisco / crosswork_data_gateway 5.0.0 5.0.2
cisco / business_process_automation - 3.2.003.009
cisco / nx-os 10.4\(1\) 10.4\(2\)

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.