On BIG-IP 11.5.1-11.6.4, iRules performing HTTP header manipulation may cause an…
Priority LOW 38Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
On BIG-IP 11.5.1-11.6.4, iRules performing HTTP header manipulation may cause an interruption to service when processing traffic handled by a Virtual Server with an associated HTTP profile, in specific circumstances, when the requests do not strictly conform to RFCs.
Why it matters now
EPSS 0.02531 85th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| F5 | BIG-IP | BIG-IP 11.5.1-11.6.4 | — | No fix listed | CNA |
- BIG-IP VendorF5 Affected BIG-IP 11.5.1-11.6.4 Fixed in — No fix listed CNA
CPE configurations NVD · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.4 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.4 Vulnerable ·F5
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-6631
- 2026-10-03 Alias added: GHSA-2rvp-xx6f-mxq8
References
More F5 Big-ip Access Policy Manager vulnerabilities
- TI-2023-25230 BIG-IP Configuration utility unauthenticated remote code execution vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2022-01269 Missing authentication in F5 BIG-IP KEVCVSS 3.1CRITICAL 9.8
- TI-2021-05850 Memory corruption in BIG-IP KEVCVSS 3.1CRITICAL 9.8
- TI-2021-05845 Server-side request forgery in BIG-IP; BIG-IQ KEVCVSS 3.1CRITICAL 9.8
- TI-2020-04820 Path traversal in BIG-IP KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2019-6631 · CVE Program
- CVE-2019-6631 · NVD
- FIRST EPSS
- GHSA-2rvp-xx6f-mxq8 · GitHub Advisory Database · CC BY 4.0
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