Severity: CriticalAction: Patch
Citrix Urges Immediate Patching of Critical NetScaler Vulnerability
Patch
Apply the vendor's security update for NetScaler ADC / Gateway.
Vulnerability record
CVE-2026-107406
Severity: CriticalExploitation: No known exploitation
Patch status
No official fix confirmed yet
Until a fix ships, follow the vendor's mitigations, limit exposure of affected systems, and watch this record for a patch.
Description
Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements: * For the following versions: Applicable only when configured as a SAML IdP: * NetScaler ADC and NetScaler Gateway between 14.1-73.37 and 14.1-73.41, inclusive * NetScaler ADC 14.1-FIPS between 14.1-73.37 FIPS and 14.1-73.41 FIPS, inclusive * NetScaler ADC and NetScaler Gateway between 13.1-64.23 and 13.1-64.28, inclusive * NetScaler ADC 13.1-FIPS between 13.1-NDcPP 13.1-37.279 and 13.1- 37.282, inclusive For the following versions: Applicable only when configured as a SAML SP or SAML IdP: * NetScaler ADC and NetScaler Gateway before 14.1-73.37 * NetScaler ADC 14.1-FIPS before 14.1-73.37 FIPS * NetScaler ADC and NetScaler Gateway before 13.1-64.23 * NetScaler ADC 13.1-FIPS before13.1-NDcPP 13.1-37.279
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
Intelligence timeline
Developments from the last 30 days, newest first.
- CVSS scoredUpdate
CVE-2026-107406 scored CVSS 9.5
Basis: NIST National Vulnerability Database
- Disclosed
Citrix Urges Immediate Patching of Critical NetScaler Vulnerability
Basis: Reporting by SecurityWeek