Improper input validation in F5 BIG-IP
Priority LOW 36CWE-20Published · 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 3.0 · NVD. Fix status from CNA.
Summary
On F5 BIG-IP 13.1.0-13.1.0.3, 13.0.0, 12.1.0-12.1.3.3, 11.6.1-11.6.3.1, 11.5.1-11.5.5, or 11.2.1, a malformed TLS handshake causes TMM to crash leading to a disruption of service. This issue is only exposed on the data plane when Proxy SSL configuration is enabled. The control plane is not impacted by this issue.
Why it matters now
EPSS 0.01696 77th 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, GTM, Link Controller, PEM, WebAccelerator, WebSafe) | 13.1.0-13.1.0.3; 13.0.0; 12.1.0-12.1.3.3; 11.6.1-11.6.3.1; 11.5.1-11.5.5; 11.2.1 | — | No fix listed | CNA |
- BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe) VendorF5 Affected 13.1.0-13.1.0.3; 13.0.0; 12.1.0-12.1.3.3; 11.6.1-11.6.3.1; 11.5.1-11.5.5; 11.2.1 Fixed in — No fix listed CNA
CPE configurations NVD · 26
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_application_acceleration_manager:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_local_traffic_manager:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_advanced_firewall_manager:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_analytics:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_access_policy_manager:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_local_traffic_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_analytics:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_access_policy_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
Show 16 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_application_security_manager:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_domain_name_system:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_edge_gateway:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_global_traffic_manager:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_link_controller:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_policy_enforcement_manager:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_webaccelerator:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* | 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_websafe:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_application_security_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_domain_name_system:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_edge_gateway:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_global_traffic_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_link_controller:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_webaccelerator:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.5; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.1.0 – 13.1.0.4 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_websafe:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5513
- 2026-10-03 Alias added: GHSA-qf47-p59r-xq6g
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-2018-5513 · CVE Program
- CVE-2018-5513 · NVD
- FIRST EPSS
- GHSA-qf47-p59r-xq6g · GitHub Advisory Database · CC BY 4.0
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