BIG-IP HTTP/2 vulnerability
Priority MEDIUM 44CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-770.
Summary
When an HTTP/2 profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization. Impact: System performance can degrade until the TMM process is either forced to restart or is manually restarted. This vulnerability allows a remote, unauthenticated attacker to cause a degradation of service that can lead to a denial-of-service (DoS) on the BIG-IP system. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00573 47th percentileScored 2026-11-07
Fix Fixed BIG-IP (F5): 21.1.0.1, 21.0.0.3, 17.5.1.8 +1BIG-IP Next for Kubernetes (F5): 2.3.2, 2.2.3+2 more products
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| F5 | BIG-IP | 21.1.0 to before 21.1.0.1; 21.0.0 to before 21.0.0.3; 17.5.0 to before 17.5.1.8; 17.1.0 to before 17.1.3.4 | 21.1.0.1, 21.0.0.3, 17.5.1.8, 17.1.3.4 | Patch available | CNA |
| F5 | BIG-IP Next for Kubernetes | 2.3.0 to before 2.3.2; 2.0.0 to before 2.2.3 | 2.3.2, 2.2.3 | Patch available | CNA |
| F5 | BIG-IP Next SPK | 1.9.0 and later; 1.7.0 to before 1.7.18 | 1.7.18 | Patch available | CNA |
| F5 | BIG-IP Next CNF | 2.3.0 to before 2.3.2; 2.0.0 to before 2.2.3; 1.1.0 to before 1.4.3 | 2.3.2, 2.2.3, 1.4.3 | Patch available | CNA |
- BIG-IP VendorF5 Affected 21.1.0 to before 21.1.0.1; 21.0.0 to before 21.0.0.3; 17.5.0 to before 17.5.1.8; 17.1.0 to before 17.1.3.4 Fixed in 21.1.0.1, 21.0.0.3, 17.5.1.8, 17.1.3.4 Patch available CNA
- BIG-IP Next for Kubernetes VendorF5 Affected 2.3.0 to before 2.3.2; 2.0.0 to before 2.2.3 Fixed in 2.3.2, 2.2.3 Patch available CNA
- BIG-IP Next SPK VendorF5 Affected 1.9.0 and later; 1.7.0 to before 1.7.18 Fixed in 1.7.18 Patch available CNA
- BIG-IP Next CNF VendorF5 Affected 2.3.0 to before 2.3.2; 2.0.0 to before 2.2.3; 1.1.0 to before 1.4.3 Fixed in 2.3.2, 2.2.3, 1.4.3 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_next_cloud-native_network_functions:*:*:*:*:*:*:*:* | 1.1.0 to before 1.4.3; 2.0.0 to before 2.2.3 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_next_cloud-native_network_functions:2.3.0:*:*:*:*:*:*:* | 2.3.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_next_for_kubernetes:*:*:*:*:*:*:*:* | 2.0.0 to before 2.2.3 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_next_for_kubernetes:2.3.0:*:*:*:*:*:*:* | 2.3.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_next_service_proxy_for_kubernetes:*:*:*:*:*:*:*:* | 1.7.0 to before 1.7.18; 1.8.0 – 1.9.2; 2.0.0 – 2.0.3 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_next_cloud-native_network_functions:*:*:*:*:*:*:*:* Versions 1.1.0 to before 1.4.3; 2.0.0 to before 2.2.3 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_next_cloud-native_network_functions:2.3.0:*:*:*:*:*:*:* Versions 2.3.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_next_for_kubernetes:*:*:*:*:*:*:*:* Versions 2.0.0 to before 2.2.3 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_next_for_kubernetes:2.3.0:*:*:*:*:*:*:* Versions 2.3.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_next_service_proxy_for_kubernetes:*:*:*:*:*:*:*:* Versions 1.7.0 to before 1.7.18; 1.8.0 – 1.9.2; 2.0.0 – 2.0.3 Vulnerable ·F5
Remediation
- Fix · CNA BIG-IP (F5) Fixed in 21.1.0.1, 21.0.0.3, 17.5.1.8, 17.1.3.4
- Fix · CNA BIG-IP Next for Kubernetes (F5) Fixed in 2.3.2, 2.2.3
- Fix · CNA BIG-IP Next SPK (F5) Fixed in 1.7.18
- Fix · CNA BIG-IP Next CNF (F5) Fixed in 2.3.2, 2.2.3, 1.4.3
Timeline
- 2026-10-02 Threatist record created from CVE-2026-59762
- 2026-10-03 Alias added: GHSA-3vvh-xmcx-wpgh
References
More F5 Big-ip Next Cloud-native Network Functions vulnerabilities
- TI-2026-29357 BIG-IP SSL/TLS vulnerability CVSS 4.0HIGH 8.7
- TI-2026-29350 BIG-IP SSL/TLS vulnerability CVSS 4.0HIGH 8.7
- TI-2025-38317 TMM vulnerability CVSS 4.0HIGH 8.7
- TI-2025-38308 BIG-IP SSL/TLS vulnerability CVSS 4.0HIGH 8.7
- TI-2025-37392 BIG-IP SSL/TLS vulnerability CVSS 4.0HIGH 8.7
- TI-2025-37232 BIG-IP DNS cache vulnerability CVSS 4.0HIGH 8.7
Sources
- CVE-2026-59762 · CVE Program
- CVE-2026-59762 · NVD
- FIRST EPSS
- GHSA-3vvh-xmcx-wpgh · GitHub Advisory Database · CC BY 4.0
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