CVE-2026-88778 (GCVE-0-2026-88778)

Vulnerability from cvelistv5 – Published: 2026-09-27 16:43 – Updated: 2026-09-27 16:43
VLAI
Title
TCP Initial Sequence Number (ISN) prediction
Summary
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.
Severity
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L
CWE
  • CWE-342 - Predictable exact value from previous values
Assigner
References
Impacted products
Vendor Product Version CPE status
Citrix NetScaler ADC Affected: 0 , < 14.1-73.37 (Patch)
Affected: 0 , < 13.1-64.23 (Patch)
Affected: 0 , < 14.1-73.37 FIPS (Patch)
Affected: 0 , < 13.1.37.279 FIPS and NDcPP (Patch)
guessed Create a notification for this product.
Citrix NetScaler Gateway Affected: 0 , < 14.1-73.37 (Patch)
Affected: 0 , < 13.1-64.23 (Patch)
guessed Create a notification for this product.
Date Public
2026-09-27 15:30
Show details on NVD website
To clipboard 

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      "source": {
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    "dateReserved": "2026-09-10T07:14:57.370Z",
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    "state": "PUBLISHED"
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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