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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-88778

TCP Initial Sequence Number (ISN) prediction

Description

Predictable exact value from previous values vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Citrix NetScaler ADC

Default version status: unaffected

  • 0 to < 14.1-73.37affected
  • 0 to < 13.1-64.23affected
  • 0 to < 14.1-73.37 FIPSaffected
  • 0 to < 13.1.37.279 FIPS and NDcPPaffected

Citrix NetScaler Gateway

Default version status: unaffected

  • 0 to < 14.1-73.37affected
  • 0 to < 13.1-64.23affected

References