Improper input validation in F5 BIG-IP
Priority LOW 33CWE-20Published · Updated
Key facts
- Attack vector
- Adjacent 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 3.0 · NVD. Fix status from CNA.
Summary
Through undisclosed methods, on F5 BIG-IP 13.0.0-13.1.0.7, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.2.1-11.5.6, adjacent network attackers can cause a denial of service for VCMP guest and host systems. Attack must be sourced from adjacent network (layer 2).
Why it matters now
EPSS 0.00507 43rd 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 (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, FPS, GTM, Link Controller, PEM, WebAccelerator) | 13.0.0-13.1.0.7; 12.1.0-12.1.3.5; 11.6.0-11.6.3.1; 11.2.1-11.5.6 | — | No fix listed | CNA |
- BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, FPS, GTM, Link Controller, PEM, WebAccelerator) VendorF5 Affected 13.0.0-13.1.0.7; 12.1.0-12.1.3.5; 11.6.0-11.6.3.1; 11.2.1-11.5.6 Fixed in — No fix listed CNA
CPE configurations NVD · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* | 10.1.0 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 10.1.0 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
Show 3 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.7 Vulnerable ·F5
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5531
- 2026-10-03 Alias added: GHSA-7mw4-4m54-jm62
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-2018-5531 · CVE Program
- CVE-2018-5531 · NVD
- FIRST EPSS
- GHSA-7mw4-4m54-jm62 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences