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Improper Input Validation


Severity High
Score 7.5/10


libzmq prior to 4.0.6 and 4.1.x prior to 4.1.1 allows remote attackers to conduct downgrade attacks and bypass ZMTP v3 protocol security mechanisms via a ZMTP v2 or earlier header.

  • LOW
  • HIGH
  • NONE
  • NONE
  • NONE
  • NONE

CWE-20 - Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Advisory Timeline

  • Published