BIG-IP HTTP/2 vulnerability
When an HTTP/2 profile and an iRule containing the HTTP::redirect or HTTP::respond command are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- Published
- May 13, 2026
- Updated
- Jun 23, 2026
- EPSS
- 0.5% · 37th percentile
- CWE
- CWE-476
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
34
Monitor
Low priority for now.
- CVSS
- 34 / 40 · 8.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · f5
- 7.5
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| f5 | big-ip next cloud-native network functions | cpe:2.3:a:f5:big-ip_next_cloud-native_network_functions |
| f5 | big-ip next for kubernetes | cpe:2.3:a:f5:big-ip_next_for_kubernetes |
| f5 | big-ip access policy manager | cpe:2.3:a:f5:big-ip_access_policy_manager |
| f5 | big-ip advanced firewall manager | cpe:2.3:a:f5:big-ip_advanced_firewall_manager |
| f5 | big-ip advanced web application firewall | cpe:2.3:a:f5:big-ip_advanced_web_application_firewall |
| f5 | big-ip analytics | cpe:2.3:a:f5:big-ip_analytics |
| f5 | big-ip application acceleration manager | cpe:2.3:a:f5:big-ip_application_acceleration_manager |
| f5 | big-ip application security manager | cpe:2.3:a:f5:big-ip_application_security_manager |
| f5 | big-ip application visibility and reporting | cpe:2.3:a:f5:big-ip_application_visibility_and_reporting |
| f5 | big-ip automation toolchain | cpe:2.3:a:f5:big-ip_automation_toolchain |
| f5 | big-ip carrier-grade nat | cpe:2.3:a:f5:big-ip_carrier-grade_nat |
| f5 | big-ip container ingress services | cpe:2.3:a:f5:big-ip_container_ingress_services |
and 11 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- f5 big-ip access policy manager17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip access policy manager16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip access policy manager17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip access policy manager21.0.0
- f5 big-ip advanced firewall manager17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip advanced firewall manager17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip advanced firewall manager16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip advanced firewall manager21.0.0
- f5 big-ip advanced web application firewall17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip advanced web application firewall16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip advanced web application firewall17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip advanced web application firewall21.0.0
- f5 big-ip analytics16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip analytics17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip analytics17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip analytics21.0.0
- f5 big-ip application acceleration manager16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip application acceleration manager17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip application acceleration manager17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip application acceleration manager21.0.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (f5). Independent of NVD's CPE analysis and usually ahead of it.
F5 BIG-IP
- 21.1.0 and laternot affected
- 21.0.0 and later · before 21.0.0.1affected
- 17.5.0 and later · before 17.5.1.4affected
- 17.1.0 and later · before 17.1.3.1affected
- 16.1.0 and lateraffected
F5 BIG-IP Next CNF
- 2.0.0 and later · before 2.0.3affected
- 1.4.0 and later · before 1.4.1affected
F5 BIG-IP Next for Kubernetes
- 2.0.0 and later · before 2.1.1affected
F5 BIG-IP Next SPK
- 2.0.0 and later · before 2.0.3affected
- 1.7.0 and later · before 1.7.17affected
Same product
f5: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-59762BIG-IP HTTP/2 vulnerability34Monitor
- CVE-2025-61974BIG-IP SSL/TLS vulnerability34Monitor
- CVE-2025-60016BIG-IP SSL/TLS vulnerability34Monitor
- CVE-2025-58120BIG-IP Next (CNF, SPK, and Kubernetes) vulnerability34Monitor
- CVE-2025-54479BIG-IP PEM vulnerability34Monitor
- CVE-2025-48008BIG-IP MPTCP vulnerability34Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- F5finder
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2025-58120210 days apartBIG-IP Next (CNF, SPK, and Kubernetes) vulnerability34Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-476 · NULL Pointer DereferenceCVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.