CVE-2025-54500

HTTP/2 Vulnerability

Published Aug 13, 2025 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
An HTTP/2 implementation flaw allows a denial-of-service (DoS) that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit (HTTP/2 MadeYouReset Attack). 

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-24575 An HTTP/2 implementation flaw allows a denial-of-service (DoS) that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit (HTTP/2 MadeYouReset Attack).  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
History
Type Values Removed Values Added
First Time appeared F5 big-ip Access Policy Manager
F5 big-ip Advanced Firewall Manager
F5 big-ip Advanced Web Application Firewall
F5 big-ip Analytics
F5 big-ip Application Acceleration Manager
F5 big-ip Application Security Manager
F5 big-ip Application Visibility And Reporting
F5 big-ip Automation Toolchain
F5 big-ip Carrier-grade Nat
F5 big-ip Container Ingress Services
F5 big-ip Ddos Hybrid Defender
F5 big-ip Domain Name System
F5 big-ip Edge Gateway
F5 big-ip Fraud Protection Service
F5 big-ip Global Traffic Manager
F5 big-ip Link Controller
F5 big-ip Local Traffic Manager
F5 big-ip Next Central Manager
F5 big-ip Next Cloud-native Network Functions
F5 big-ip Next For Kubernetes
F5 big-ip Next Service Proxy For Kubernetes
F5 big-ip Policy Enforcement Manager
F5 big-ip Ssl Orchestrator
F5 big-ip Webaccelerator
F5 big-ip Websafe
F5 silverline
CPEs cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_next_central_manager:20.3.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_next_cloud-native_network_functions:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_next_for_kubernetes:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_next_service_proxy_for_kubernetes:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:silverline:*:*:*:*:*:*:*:*
Vendors & Products F5 big-ip Access Policy Manager
F5 big-ip Advanced Firewall Manager
F5 big-ip Advanced Web Application Firewall
F5 big-ip Analytics
F5 big-ip Application Acceleration Manager
F5 big-ip Application Security Manager
F5 big-ip Application Visibility And Reporting
F5 big-ip Automation Toolchain
F5 big-ip Carrier-grade Nat
F5 big-ip Container Ingress Services
F5 big-ip Ddos Hybrid Defender
F5 big-ip Domain Name System
F5 big-ip Edge Gateway
F5 big-ip Fraud Protection Service
F5 big-ip Global Traffic Manager
F5 big-ip Link Controller
F5 big-ip Local Traffic Manager
F5 big-ip Next Central Manager
F5 big-ip Next Cloud-native Network Functions
F5 big-ip Next For Kubernetes
F5 big-ip Next Service Proxy For Kubernetes
F5 big-ip Policy Enforcement Manager
F5 big-ip Ssl Orchestrator
F5 big-ip Webaccelerator
F5 big-ip Websafe
F5 silverline
Type Values Removed Values Added
First Time appeared F5
F5 big-ip
F5 big-ip Next
Vendors & Products F5
F5 big-ip
F5 big-ip Next
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description An HTTP/2 implementation flaw allows a denial-of-service (DoS) that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit (HTTP/2 MadeYouReset Attack).  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Title HTTP/2 Vulnerability
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Weaknesses
  • CWE-770

    Allocation of Resources Without Limits or Throttling

Sources

Status
PUBLISHED
Assigner
f5
Published
Updated
Nov 3, 2025, 8:06 PM
Reserved
Jul 29, 2025, 5:12 PM
Status
Analyzed
Published
Aug 13, 2025, 3:15 PM
Modified
Jun 17, 2026, 9:40 AM
Severity
Moderate
Public date
Aug 13, 2025, 2:46 PM