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TI-2019-04653 Aliases CVE-2019-6603GHSA-5fc7-fcqx-62c8

In BIG-IP 11.5.1-11.5.8, 11.6.1-11.6.3, 12.1.0-12.1.3, and 13.0.0-13.0.1, malformed TCP…

Priority LOW 36Published · 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

In BIG-IP 11.5.1-11.5.8, 11.6.1-11.6.3, 12.1.0-12.1.3, and 13.0.0-13.0.1, malformed TCP packets sent to a self IP address or a FastL4 virtual server may cause an interruption of service. The control plane is not exposed to this issue. This issue impacts the data plane virtual servers and self IPs.

Why it matters now

EPSS 0.01782 78th 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

VendorProductAffected versionsFixed inStatusSource
F5BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, FPS, GTM, Link Controller, PEM, WebAccelerator)11.5.1-11.5.8; 11.6.1-11.6.3; 12.1.0-12.1.3; 13.0.0-13.0.1—No fix listedCNA
  • BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, FPS, GTM, Link Controller, PEM, WebAccelerator) VendorF5 Affected 11.5.1-11.5.8; 11.6.1-11.6.3; 12.1.0-12.1.3; 13.0.0-13.0.1 Fixed in — No fix listed CNA

CPE configurations NVD · 13

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:h:f5:big-ip_protocol_security_manager:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:h:f5:big-ip_protocol_security_manager:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
Show 3 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.0.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1VulnerableF5
  • cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.0.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.8; 11.6.1 – 11.6.3; 12.1.0 – 12.1.3; 13.0.0 – 13.0.1 Vulnerable ·F5

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-6603
  2. 2026-10-03 Alias added: GHSA-5fc7-fcqx-62c8

References

Advisory 1

  • 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
See all 629 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences