Memory Overflow Vulnerability in Citrix NetScaler ADC and Gateway
CVE-2026-111333

6.9MEDIUM

Key Information:

Vendor

Citrix
Status
Netscaler Adc
Netscaler Gateway
Vendor
CVE Published:
13 November 2026

What is CVE-2026-111333?

A memory overflow vulnerability exists in the authentication request processing of Citrix NetScaler ADC and Citrix NetScaler Gateway. This flaw can result in unpredictable or erroneous behavior, potentially leading to Denial of Service conditions, thereby affecting the availability of these critical services. Administrators are advised to monitor their systems for signs of exploitation and apply patches or mitigations promptly.

Affected Version(s)

NetScaler ADC 0 < 14.1-73.57

NetScaler ADC 0 < 13.1-64.39

NetScaler ADC 0 < 14.1-73.58 FIPS

References

https://support.citrix.com/support-home/kbsearch/article?...

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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