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High severity7.5NVD Advisory· Published Feb 12, 2021· Updated Jun 17, 2026

CVE-2021-22976

CVE-2021-22976

Description

On BIG-IP Advanced WAF and ASM version 16.0.x before 16.0.1.1, 15.1.x before 15.1.2, 14.1.x before 14.1.3.1, 13.1.x before 13.1.3.6, and all 12.1.x versions, when the BIG-IP ASM system processes WebSocket requests with JSON payloads, an unusually large number of parameters can cause excessive CPU usage in the BIG-IP ASM bd process. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Affected products

2
  • BIG-IP/BIG-IP Advanced WAF and ASMdescription
  • F5, Inc./Big IPllm-fuzzy
    Range: <16.0.1.1, <15.1.2, <14.1.3.1, <13.1.3.6, all 12.1.x

Patches

Vulnerability mechanics

References

1

News mentions

0

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