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Critical9.9F5

Critical [CVE-2021-23031] BIG-IP: On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4.1, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and…

This critical-severity F5 advisory covers CVE-2021-23031 affecting BIG-IP, Advanced WAF, ASM.

CVE-2021-23031 Published Sep 14, 2021Updated by vendor Jun 17, 2026
Affected products & platforms
F5BIG-IP
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Summary

On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4.1, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and 11.6.x before 11.6.5.3, an authenticated user may perform a privilege escalation on the BIG-IP Advanced WAF and ASM Configuration utility.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected versions
  • 16.0.x
  • 15.1.x
  • 14.1.x
  • 13.1.x
  • 12.1.x
  • 11.6.x

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • 16.0.1.2
  • 15.1.3
  • 14.1.4.1
  • 13.1.4
  • 12.1.6
  • 11.6.5.3

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation

Upgrade to a fixed release: 16.0.1.2, 15.1.3, 14.1.4.1, 13.1.4, 12.1.6, 11.6.5.3. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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