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Fencer Intel
high 8.2

CVE-2021-23012 json

On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14.1.x before 14.1.4, and 13.1.x before 13.1.4, lack of input validation f…

published 5y ago modified 4mo ago also EUVD-2021-10130

cvss
8.2
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14.1.x before 14.1.4, and 13.1.x before 13.1.4, lack of input validation for items used in the system support functionality may allow users granted either "Resource Administrator" or "Administrator" roles to execute arbitrary bash commands on BIG-IP. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Patch / fix

  • f5 big-ip_access_policy_manager 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_advanced_firewall_manager 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_advanced_web_application_firewall 13.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_analytics 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_application_acceleration_manager 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_application_security_manager 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_ddos_hybrid_defender 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_domain_name_system 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_fraud_protection_service 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_global_traffic_manager 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_link_controller 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_local_traffic_manager 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_policy_enforcement_manager 13.1.4, 14.1.4, 15.1.3, 16.0.1.1
  • f5 big-ip_ssl_orchestrator 13.1.4, 14.1.4, 15.1.3, 16.0.1.1

Is CVE-2021-23012 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • n/a BIG-IP

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

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.