CVE-2026-88775CWE-120

CVE-2026-88775

Critical · published September 27, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
31.2
In the wild
Unconfirmed
What it is

Memory overflow 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 leading Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.8 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
EPSS
0.00384 · 31.2th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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&articleTitle=Citrix_NetScaler_ADC_and_Citrix_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_88771_CVE_2026_88772_CVE_2026_88773_CVE_2026_88774_CVE_2026_88775_CVE_2026_88776_CVE_2026_88777_and_CVE_2026_88778 · 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
EPSS history
Timeline
  • 29 SEP 03:28Z
    EPSS moved — → 0%
    epss
  • 27 SEP 16:21Z
    Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service
    cvelistv5