CVE-2026-88773
Critical
10.0 CVSS v3.1
CVSS v4.0: 9.3
- Published
- Sep 27, 2026
- Updated
- Sep 29, 2026
- Vendor
- Citrix
- Affected versions
- See affected products
- Weakness
- CWE-444
Summary
Inconsistent interpretation of HTTP requests (‘HTTP Request/Response smuggling’) 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 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.
Severity
Critical (10.0)CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CVSS v4.0 (9.3)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Affected products
- Citrix Netscaler Application Delivery Controller >= 13.1, < 13.1-64.23
- Citrix Netscaler Application Delivery Controller >= 13.1, < 13.1.37.279
- Citrix Netscaler Application Delivery Controller >= 14.1, < 14.1-73.37
- Citrix Netscaler Application Delivery Controller >= 14.1-66.68, = 13.1, < 13.1-64.23
- Citrix Netscaler Gateway >= 14.1, < 14.1-73.37
Exploitation status
Unknown
Technical details
Technical analysis has not been written for this record yet.
Mitigation & remediation
Follow the vendor advisory linked below for patches and workarounds.