CVE-2025-54500

Home/CVE/An HTTP/2 implementation flaw allows a denial-of-service (DoS) that uses malformed HTTP/2 control frames in order to bre

CVE

An HTTP/2 implementation flaw allows a denial-of-service (DoS) that uses malformed HTTP/2 control frames in order to bre

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.

MEDIUM · CVSS 5.3 EPSS 0.00151

Schedule remediation

SSVC automatable: yes - attacks can be scripted at scale

Sigma rules0 YARA rules0

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Weakness Classification

CWE-770Allocation of Resources Without Limits or Throttling

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Affected Products & Versions

f5 big-ip access policy manager>= 15.1.0 and < 15.1.10.8
f5 big-ip advanced firewall manager>= 15.1.0 and < 15.1.10.8
f5 big-ip advanced web application firewall>= 15.1.0 and < 15.1.10.8
f5 big-ip analytics>= 15.1.0 and < 15.1.10.8
f5 big-ip application acceleration manager>= 15.1.0 and < 15.1.10.8
f5 big-ip application security manager>= 15.1.0 and < 15.1.10.8
f5 big-ip application visibility and reporting>= 15.1.0 and < 15.1.10.8
f5 big-ip automation toolchain>= 15.1.0 and < 15.1.10.8
Show all 60 affected productsf5 big-ip carrier-grade nat>= 15.1.0 and < 15.1.10.8
f5 big-ip container ingress services>= 15.1.0 and < 15.1.10.8
f5 big-ip ddos hybrid defender>= 15.1.0 and < 15.1.10.8
f5 big-ip domain name system>= 15.1.0 and < 15.1.10.8
f5 big-ip edge gateway>= 15.1.0 and < 15.1.10.8
f5 big-ip fraud protection service>= 15.1.0 and < 15.1.10.8
f5 big-ip global traffic manager>= 15.1.0 and < 15.1.10.8
f5 big-ip link controller>= 15.1.0 and < 15.1.1.0.8
f5 big-ip local traffic manager>= 15.1.0 and < 15.1.10.8
f5 big-ip policy enforcement manager>= 15.1.0 and < 15.1.10.8
f5 big-ip ssl orchestrator>= 15.1.0 and < 15.1.10.8
f5 big-ip webaccelerator>= 15.1.0 and < 15.1.10.8
f5 big-ip websafe>= 15.1.0 and < 15.1.10.8
f5 big-ip access policy manager>= 16.1.0 and < 16.1.6.1
f5 big-ip advanced firewall manager>= 16.1.0 and < 16.1.6.1
f5 big-ip advanced web application firewall>= 16.1.0 and < 16.1.6.1
f5 big-ip analytics>= 16.1.0 and < 16.1.6.1
f5 big-ip application acceleration manager>= 16.1.0 and < 16.1.6.1
f5 big-ip application security manager>= 16.1.0 and < 16.1.6.1
f5 big-ip application visibility and reporting>= 16.1.0 and < 16.1.6.1
f5 big-ip automation toolchain>= 16.1.0 and < 16.1.6.1
f5 big-ip carrier-grade nat>= 16.1.0 and < 16.1.6.1
f5 big-ip container ingress services>= 16.1.0 and < 16.1.6.1
f5 big-ip ddos hybrid defender>= 16.1.0 and < 16.1.6.1
f5 big-ip domain name system>= 16.1.0 and < 16.1.6.1
f5 big-ip edge gateway>= 16.1.0 and < 16.1.6.1
f5 big-ip fraud protection service>= 16.1.0 and < 16.1.6.1
f5 big-ip global traffic manager>= 16.1.0 and < 16.1.6.1
f5 big-ip link controller>= 16.1.0 and < 16.1.6.1
f5 big-ip local traffic manager>= 16.1.0 and < 16.1.6.1
f5 big-ip policy enforcement manager>= 16.1.0 and < 16.1.6.1
f5 big-ip ssl orchestrator>= 16.1.0 and < 16.1.6.1
f5 big-ip webaccelerator>= 16.1.0 and < 16.1.6.1
f5 big-ip websafe>= 16.1.0 and < 16.1.6.1
f5 big-ip access policy manager>= 17.1.0 and < 17.1.3
f5 big-ip access policy manager>= 17.5.0 and < 17.5.1.2
f5 big-ip advanced firewall manager>= 17.1.0 and < 17.1.3
f5 big-ip advanced firewall manager>= 17.5.0 and < 17.5.1.2
f5 big-ip advanced web application firewall>= 17.1.0 and < 17.1.3
f5 big-ip advanced web application firewall>= 17.5.0 and < 17.5.1.2
f5 big-ip analytics>= 17.1.0 and < 17.1.3
f5 big-ip analytics>= 17.5.0 and < 17.5.1.2
f5 big-ip application acceleration manager>= 17.1.0 and < 17.1.3
f5 big-ip application acceleration manager>= 17.5.0 and < 17.5.1.2
f5 big-ip application security manager>= 17.1.0 and < 17.1.3
f5 big-ip application security manager>= 17.5.0 and < 17.5.1.2
f5 big-ip application visibility and reporting>= 17.1.0 and < 17.1.3
f5 big-ip application visibility and reporting>= 17.5.0 and < 17.5.1.2
f5 big-ip automation toolchain>= 17.1.0 and < 17.1.3
f5 big-ip automation toolchain>= 17.5.0 and < 17.5.1.2
f5 big-ip carrier-grade nat>= 17.1.0 and < 17.1.3
f5 big-ip carrier-grade nat>= 17.5.0 and < 17.5.1.2

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Scoring & Timeline

5.3

MEDIUM · CVSS v3.1 · f5sirt@f5.com

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD13 Aug 2025 · 03:15 PM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

SSVC triage · cisa-vulnrichment

Exploitation

none

Automatable

yes

Technical impact

partial

SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

https://my.f5.com/manage/s/article/K000152001Vendor Advisory

https://www.kb.cert.org/vuls/id/767506Third Party Advisory

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External lookups - second-class, for what we don’t hold ourselves

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