Critical severity · published Oct 8, 2026
CVE-2026-107406
Memory overflow vulnerability leading to Remote Code Execution or Denial of Service
9.5
CVSS
1.9%
EPSS
No
On KEV
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
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AD
ADC · NetScaler
before 14.1-73.46; before 13.1-64.29; before 14.1-73.46 FIPS; before 13.1.37.283 FIPS · source: vendor
GA
Gateway · NetScaler
before 14.1-73.46; before 13.1-64.29 · source: vendor
In the news
VulnerabilityCritical
CVE-2026-107406: Citrix Fixes Critical NetScaler ADC and Gateway Vulnerability
Citrix patched CVE-2026-107406, a critical NetScaler ADC and Gateway flaw that could allow remote code execution or denial-of-service attacks. Citrix has released security updates to fix CVE-2026-107406 (CVSS score of 9.5), a critical flaw affecting NetScaler ADC and NetScaler Gateway that could allow remote code execution or denial-of-service (DoS) under certain conditions. The vulnerability is […]
Oct 9, 2026·Security Affairs
VulnerabilityCritical
Citrix Patches Critical NetScaler Flaw That Could Enable RCE in SAML Deployments
Citrix has released patches for yet another critical security flaw impacting NetScaler ADC and NetScaler Gateway that could result in remote code execution or denial-of-service (DoS) under certain conditions.
"CVE-2026-107406 is a memory overflow vulnerability that may lead to remote code execution or denial-of-service under specific configuration conditions," Citrix said.
The vulnerability
Oct 9, 2026·The Hacker News
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107406
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107406
support.citrix.com
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697191
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