CVE-2026-88778CWE-342

CVE-2026-88778

High · published September 27, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
30.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
8.8 · 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
EPSS
0.00379 · 30.7th percentile
Weakness
CWE-342 · Predictable Exact Value from Previous Values
Published
2026-09-27T21:16Z
Affected products (7)
ProductVersionsFixed in
citrix/netscaler_application_delivery_controller≥ 13.1, < 13.1-64.2313.1-64.23
citrix/netscaler_application_delivery_controller≥ 13.1, < 13.1.37.27913.1.37.279
citrix/netscaler_application_delivery_controller≥ 13.1, < 13.1.37.27913.1.37.279
citrix/netscaler_application_delivery_controller≥ 14.1, < 14.1-73.3714.1-73.37
citrix/netscaler_application_delivery_controller≥ 14.1-66.68, ≤ 14.1-73.37—
citrix/netscaler_gateway≥ 13.1, < 13.1-64.2313.1-64.23
citrix/netscaler_gateway≥ 14.1, < 14.1-73.3714.1-73.37
References (1)
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096 · 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
EPSS history
Timeline
  • 29 SEP 03:28Z
    EPSS moved — → 0%
    epss
  • 27 SEP 16:43Z
    TCP Initial Sequence Number (ISN) prediction
    cvelistv5