CVE-2025-54500: HTTP/2 Vulnerability

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-13 · updated 2026-06-17
Weakness: CWE-770

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.

Affected products

F5 BIG-IP APM: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
BIG-IP: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Advanced Web Application Firewall: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Analytics: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Networks, Inc. BIG-IP (AAM): from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
BIG-IP ASM: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Application Visibility And Reporting: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Automation Toolchain: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Carrier-Grade Nat: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 BIG-IP Container Ingress Services: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Ddos Hybrid Defender: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 BIG-IP DNS: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Edge Gateway: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Fraud Protection Service: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Global Traffic Manager: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3
F5 Big-Ip Link Controller: from 15.1.0 before 15.1.1.0.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.1.0.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 BIG-IP (LTM): from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 BIG-IP Next Central Manager: 20.3.0
F5 BIG-IP Next CNF: from 1.1.0 through 1.4.1; from 2.0.0 through 2.0.2
F5 BIG-IP Next for Kubernetes: 2.0.0
F5 BIG-IP Next SPK: from 1.7.0 through 1.9.2; from 2.0.0 through 2.0.2
F5 Networks, Inc. BIG-IP (PEM): from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Ssl Orchestrator: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Webaccelerator: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Big-Ip Websafe: from 15.1.0 before 15.1.10.8; from 16.1.0 before 16.1.6.1; from 17.1.0 before 17.1.3; from 17.5.0 before 17.5.1.2 — fixed in 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2
F5 Silverline: all versions

How to fix

Upgrade to a fixed version: F5 BIG-IP APM 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; BIG-IP 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; F5 Big-Ip Advanced Web Application Firewall 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; F5 Big-Ip Analytics 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; F5 Networks, Inc. BIG-IP (AAM) 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; BIG-IP ASM 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; F5 Big-Ip Application Visibility And Reporting 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; F5 Big-Ip Automation Toolchain 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; F5 Big-Ip Carrier-Grade Nat 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; F5 BIG-IP Container Ingress Services 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; F5 Big-Ip Ddos Hybrid Defender 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2; F5 BIG-IP DNS 15.1.10.8, 16.1.6.1, 17.1.3, 17.5.1.2. Check the vendor advisory for mitigations.

References

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