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Vulnerability DatabaseCVE-2021-23051

CVE-2021-23051: 
F5 BIG-IP Advanced Firewall Manager vulnerability analysis and mitigation

Overview

CVE-2021-23051 affects BIG-IP versions 15.1.0.4 through 15.1.3 when using the Data Plane Development Kit (DPDK)/Elastic Network Adapter (ENA) driver with BIG-IP on Amazon Web Services (AWS) systems. This vulnerability is related to an incomplete fix for CVE-2020-5862 (MITRE).

Technical details

The vulnerability occurs when undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. This specifically affects systems using the DPDK/ENA driver configuration in AWS environments (CERT-FR).

Impact

When exploited, this vulnerability can lead to a denial of service condition by causing the Traffic Management Microkernel (TMM) to terminate, potentially disrupting the normal operation of affected BIG-IP systems (CERT-FR).

Mitigation and workarounds

The vulnerability has been addressed in versions after BIG-IP 15.1.3. Organizations are advised to upgrade to a patched version to mitigate this vulnerability. Software versions which have reached End of Technical Support (EoTS) are not evaluated (MITRE).

Additional resources

Source: This report was generated using AI

Related F5 BIG-IP Advanced Firewall Manager vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-41433HIGH8.7
  • F5 BIG-IP Advanced Firewall ManagerF5 BIG-IP Advanced Firewall Manager
  • cpe:2.3:a:f5:big-ip_local_traffic_manager
NoYesMay 07, 2025
CVE-2025-41431HIGH8.7
  • F5 BIG-IP Advanced Firewall ManagerF5 BIG-IP Advanced Firewall Manager
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CVE-2025-41414HIGH8.7
  • F5 BIG-IP Advanced Firewall ManagerF5 BIG-IP Advanced Firewall Manager
  • cpe:2.3:a:f5:big-ip_access_policy_manager
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CVE-2025-41399HIGH8.7
  • F5 BIG-IP Advanced Firewall ManagerF5 BIG-IP Advanced Firewall Manager
  • cpe:2.3:a:f5:big-ip_domain_name_system
NoYesMay 07, 2025
CVE-2025-54500MEDIUM6.9
  • F5 BIG-IP Advanced Firewall ManagerF5 BIG-IP Advanced Firewall Manager
  • cpe:2.3:a:f5:big-ip_access_policy_manager
NoYesAug 13, 2025

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