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TI-2020-04839 Aliases CVE-2020-5921GHSA-3wm8-xffc-5pg9

in BIG-IP versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.6, 13.1.0-13.1.3.4…

Priority LOW 35Published · 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

in BIG-IP versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.6, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.2, Syn flood causes large number of MCPD context messages destined to secondary blades consuming memory leading to MCPD failure. This issue affects only VIPRION hosts with two or more blades installed. Single-blade VIPRION hosts are not affected.

Why it matters now

EPSS 0.01044 64th 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
—BIG-IP15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.6, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, 11.6.1-11.6.5.2—No fix listedCNA
  • BIG-IP Vendor— Affected 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.6, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, 11.6.1-11.6.5.2 Fixed in — No fix listed CNA

CPE configurations NVD · 11

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5VulnerableF5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.5.2; 14.1.0 to before 14.1.2.7; 15.0.0 to before 15.0.1.4; 15.1.0 to before 15.1.0.5 Vulnerable ·F5

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-5921
  2. 2026-10-03 Alias added: GHSA-3wm8-xffc-5pg9

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