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CVE-2026-88774

Feature policy bypass due to improper HTTP URL based expression usage

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 to a feature policy bypass due to improper HTTP URL based expression usage.

CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Vendors
Citrix
Products
Netscaler Adc Netscaler Application Delivery Controller Netscaler Gateway
CVE-2026-88778

TCP Initial Sequence Number (ISN) prediction

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.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Citrix
Products
Netscaler Adc Netscaler Application Delivery Controller Netscaler Gateway
CVE-2026-88776

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

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

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Citrix
Products
Netscaler Adc Netscaler Application Delivery Controller Netscaler Gateway
CVE-2026-88777

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

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

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Citrix
Products
Netscaler Adc Netscaler Application Delivery Controller Netscaler Gateway
CVE-2026-88775

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

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

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Citrix
Products
Netscaler Adc Netscaler Application Delivery Controller Netscaler Gateway
CVE-2026-88773

HTTP Request Smuggling

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.

CVSS 4.0 · 9.3 Critical EPSS 3.1% KEV · Not listed
Vendors
Citrix
Products
Netscaler Adc Netscaler Application Delivery Controller Netscaler Gateway
CVE-2026-88772

Memory overflow vulnerability leading to Remote Code Execution or Denial of Service

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 to Remote Code Execution or Denial of Service

CVSS 4.0 · 9.5 Critical EPSS 76.6% KEV · Listed
Vendors
Citrix
Products
Netscaler Adc Netscaler Application Delivery Controller Netscaler Gateway
CVE-2026-88771

A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands

Improper input validation 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 to an unauthenticated attacker to execute arbitrary commands.

CVSS 4.0 · 9.5 Critical EPSS 81.9% KEV · Listed
Vendors
Citrix
Products
Netscaler Adc Netscaler Application Delivery Controller Netscaler Gateway