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9.5

NetScaler ADC/Gateway can be crashed or hijacked via SAML

CVE-2026-107406 · published 1 day ago
Summary

Certain versions of NetScaler ADC and NetScaler Gateway that act as SAML identity or service providers may allow a memory overflow, which could let an attacker stop the device or run their own code. The risk affects versions between 13.1-64.23 and 14.1-73.41, as well as earlier releases before those numbers. Upgrade to the latest release or apply the vendor's security patch and verify SAML settings are correctly configured.

What to do
  • Update netscaler adc to version 14.1-73.46 or later.
  • Update netscaler gateway to version 14.1-73.46 or later.
Affected software
VendorProductAffected versions
netscaler adc < 14.1-73.46
netscaler gateway < 14.1-73.46
Original advisory text
Memory overflow vulnerability leading to Remote Code Execution or Denial of Service
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
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
9.5 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-119Buffer Overflow
Timeline
Published8 Oct 2026
Updated10 Oct 2026
First seen8 Oct 2026
Sources
CVE-2026-107406 · NVD
CVE-2026-107406 · MITRE
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