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Fencer Intel
high 7.5

CVE-2021-23051 json

On BIG-IP versions 15.1.0.4 through 15.1.3, when the Data Plane Development Kit (DPDK)/Elastic Network Adapter (ENA) driver is used with BI…

published 5y ago modified 4mo ago also EUVD-2021-10169

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

On BIG-IP versions 15.1.0.4 through 15.1.3, when the Data Plane Development Kit (DPDK)/Elastic Network Adapter (ENA) driver is used with BIG-IP on Amazon Web Services (AWS) systems, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. This is due to an incomplete fix for CVE-2020-5862. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Patch / fix

  • f5 big-ip_access_policy_manager 15.1.3.1
  • f5 big-ip_advanced_firewall_manager 15.1.3.1
  • f5 big-ip_advanced_web_application_firewall 15.1.3.1
  • f5 big-ip_analytics 15.1.3.1
  • f5 big-ip_application_acceleration_manager 15.1.3.1
  • f5 big-ip_application_security_manager 15.1.3.1
  • f5 big-ip_domain_name_system 15.1.3.1
  • f5 big-ip_fraud_protection_service 15.1.3.1
  • f5 big-ip_global_traffic_manager 15.1.3.1
  • f5 big-ip_link_controller 15.1.3.1
  • f5 big-ip_local_traffic_manager 15.1.3.1

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Exploit prediction

0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • n/a BIG-IP

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.