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TI-2021-05859 Aliases CVE-2021-23000GHSA-6vhg-w9jf-mcqf

On BIG-IP versions 13.1.3.4-13.1.3.6 and 12.1.5.2, if the tmm.http.rfc.enforcement BigDB…

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

On BIG-IP versions 13.1.3.4-13.1.3.6 and 12.1.5.2, if the tmm.http.rfc.enforcement BigDB key is enabled in a BIG-IP system, or the Bad host header value is checked in the AFM HTTP security profile associated with a virtual server, in rare instances, a specific sequence of malicious requests may cause TMM to restart. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Why it matters now

EPSS 0.00967 61st 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-IP13.1.3.4-13.1.3.5, 12.1.5.2—No fix listedCNA
  • BIG-IP Vendor— Affected 13.1.3.4-13.1.3.5, 12.1.5.2 Fixed in — No fix listed CNA

CPE configurations NVD · 28

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
Show 18 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_application_security_manager:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_domain_name_system:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_fraud_protection_service:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_link_controller:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_local_traffic_manager:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*13.1.3.4 to before 13.1.3.6VulnerableF5
cpe:2.3:a:f5:ssl_orchestrator:12.1.5.2:*:*:*:*:*:*:*12.1.5.2VulnerableF5
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_security_manager:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_domain_name_system:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_fraud_protection_service:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_link_controller:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5
  • cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:* Versions 13.1.3.4 to before 13.1.3.6 Vulnerable ·F5
  • cpe:2.3:a:f5:ssl_orchestrator:12.1.5.2:*:*:*:*:*:*:* Versions 12.1.5.2 Vulnerable ·F5

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-23000
  2. 2026-10-03 Alias added: GHSA-6vhg-w9jf-mcqf

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