Vulnerability in Citrix Netscaler Application Delivery Controller

CVE-2026-88778

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS 0.007, 53.4th percentile (scored ); unchanged over 30 days. About EPSS.

Affected products

Weakness classification (CWE)

Public exploits and proof-of-concept code

5 public repositories with exploit or proof-of-concept code for this CVE:

  • CompleTech-Security/netscaler-cve-2026-88778-check (last pushed 2026-10-26): Offline NetScaler ADC / Gateway evidence checker for CVE-2026-88778. Reported firmware and configuration evidence. Standalone Python; JSON/CSV/HTML reports; no exploit payloads.
  • CompleteTech-Security/netscaler-cve-2026-88778-check (last pushed 2026-10-26): Offline NetScaler ADC / Gateway evidence checker for CVE-2026-88778. Reported firmware and configuration evidence. Standalone Python; JSON/CSV/HTML reports; no exploit payloads.
  • CompleTetech-Security/netscaler-cve-2026-88778-check (last pushed 2026-10-26): Offline NetScaler ADC / Gateway evidence checker for CVE-2026-88778. Reported firmware and configuration evidence. Standalone Python; JSON/CSV/HTML reports; no exploit payloads.
  • completetech-security/netscaler-cve-2026-88778-check (last pushed 2026-10-24): Standalone defensive checker project for CVE-2026-88778: Citrix NetScaler ADC / Gateway: Predictable TCP initial sequence numbers. One exploit per repository; implementation pending.
  • CompleteTech-LLC/netscaler-cve-2026-88778-check (last pushed 2026-10-24): Standalone defensive checker project for CVE-2026-88778: Citrix NetScaler ADC / Gateway: Predictable TCP initial sequence numbers. One exploit per repository; implementation pending.

References

This CVE has public exploit evidence. See the latest CVEs with public exploits.