CVE-2026-88771: Improper Input Validation

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...

Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for remote code execution or denial of service...

Citrix NetScaler Improper Input Validation Vulnerability

Citrix NetScaler ADC and NetScaler Gateway contain an improper input validation vulnerability that could allow an unauthenticated attacker to execute arbitrary commands...

PT-2026-99554

Name of the Vulnerable Software and Affected Versions Citrix NetScaler ADC versions prior to 14.1-73.37 Citrix NetScaler ADC versions prior to 13.1-64.23 Citrix NetScaler ADC versions prior to 14.1-73.37 FIPS Citrix NetScaler ADC versions prior to 13.1.37.279 FIPS and NDcPP Citrix NetScaler Gatew...

PT-2026-99559

Name of the Vulnerable Software and Affected Versions Citrix NetScaler ADC versions prior to 14.1-73.37 Citrix NetScaler ADC versions prior to 13.1-64.23 Citrix NetScaler ADC versions prior to 14.1-73.37 FIPS Citrix NetScaler ADC versions prior to 13.1.37.279 FIPS and NDcPP Citrix NetScaler Gatew...

PT-2026-99553

Name of the Vulnerable Software and Affected Versions Citrix NetScaler ADC versions prior to 14.1-73.37 Citrix NetScaler ADC versions prior to 13.1-64.23 Citrix NetScaler ADC versions prior to 14.1-73.37 FIPS Citrix NetScaler ADC versions prior to 13.1.37.279 FIPS and NDcPP Citrix NetScaler Gatew...

PT-2026-99558

Name of the Vulnerable Software and Affected Versions Citrix NetScaler ADC versions prior to 14.1-73.37 Citrix NetScaler ADC versions prior to 13.1-64.23 Citrix NetScaler ADC versions prior to 14.1-73.37 FIPS Citrix NetScaler ADC versions prior to 13.1.37.279 FIPS and NDcPP Citrix NetScaler Gatew...

CVE-2026-88773: Inconsistent Interpretation of HTTP Requests

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 FIP...

PT-2026-99560

Name of the Vulnerable Software and Affected Versions Citrix NetScaler ADC versions prior to 14.1-73.37 Citrix NetScaler ADC versions prior to 13.1-64.23 Citrix NetScaler ADC versions prior to 14.1-73.37 FIPS Citrix NetScaler ADC versions prior to 13.1.37.279 FIPS and NDcPP Citrix NetScaler Gatew...

PT-2026-99550

Name of the Vulnerable Software and Affected Versions Citrix NetScaler ADC versions prior to 14.1-73.37 Citrix NetScaler ADC versions prior to 13.1-64.23 Citrix NetScaler ADC versions prior to 14.1-73.37 FIPS Citrix NetScaler ADC versions prior to 13.1.37.279 FIPS and NDcPP Citrix NetScaler Gatew...

PT-2026-99551

Name of the Vulnerable Software and Affected Versions Citrix NetScaler ADC versions prior to 14.1-73.37 Citrix NetScaler ADC versions prior to 13.1-64.23 Citrix NetScaler ADC versions prior to 14.1-73.37 FIPS Citrix NetScaler ADC versions prior to 13.1.37.279 FIPS and NDcPP Citrix NetScaler Gatew...

Exploit for Authentication Bypass Using an Alternate Path or Channel in Citrix Netscaler_Application_Delivery_Controller

Citrix NetScaler SAML nFactor Context Authentication Bypass —...

CISA Flags Exploited Cisco, Citrix, Fortinet Flaws, Sets Sept. 12 Federal Patch Deadline

The U.S. Cybersecurity and Infrastructure Security Agency CISA on Wednesday added three flaws, each impacting Cisco, Citrix, and Fortinet, to its Known Exploited Vulnerabilities KEV catalog, requiring Federal Civilian Executive Branch FCEB agencies to apply the patches by September 12, 2026. The...

CISA Adds Four Known Exploited Vulnerabilities to Catalog

CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities KEV Catalog, based on evidence of active exploitation. CVE-2025-25249 Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability CVE-2026-19490 Citrix NetScaler Authentication Bypass Using an Alternate Path or...

Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability

Citrix NetScaler ADC and NetScaler Gateway contain an authentication-bypass vulnerability involving an alternate path or channel. When the NetScaler appliance is configured as an AAA virtual server or as a Gateway SSL VPN, ICA Proxy, CVPN, or RDP Proxy, an unauthenticated remote threat actor may ...

Exploit for Improper Restriction of Operations within the Bounds of a Memory Buffer in Citrix Netscaler_Application_Delivery_Controller

CitrixBleedCVE-2026-8452-2025-5777 CitrixBleed Exploit To...

CISA Adds Six Exploited Flaws to KEV, Including NetScaler, Linux, and SQL Server Bugs

The U.S. Cybersecurity and Infrastructure Security Agency CISA on Wednesday added six flaws to its Known Exploited Vulnerabilities KEV catalog, including a high-severity security vulnerability impacting Citrix NetScaler ADC and NetScaler Gateway, citing evidence of active exploitation. The...

Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability which could lead to denial of service...

CVE-2026-19490: Critical Vulnerability Affecting Citrix NetScaler ADC and NetScaler Gateway

Overview On August 19, 2026, a security advisory was published for CVE-2026-19490, a critical authentication bypass vulnerability affecting Citrix NetScaler ADC and NetScaler Gateway. The vulnerability carries a CVSS v4.0 base score of 9.3 and can be exploited remotely by an unauthenticated...

PT-2026-78351

Name of the Vulnerable Software and Affected Versions NetScaler ADC versions 13.1 through 63.21 NetScaler ADC versions 14.1 through 73.32 NetScaler Gateway versions 13.1 through 63.21 NetScaler Gateway versions 14.1 through 73.32 Description An authentication bypass exists in the nsppe component ...