Memory Overflow Vulnerability in Citrix NetScaler ADC and Gateway
CVE-2026-120868

9.3CRITICAL

Key Information:

Vendor

Citrix Netscaler

Status
Adc
Gateway
Vendor
CVE Published:
12 November 2026

What is CVE-2026-120868?

A memory overflow vulnerability in the packet processing component of Citrix NetScaler ADC and NetScaler Gateway has been identified. This flaw can lead to unpredictable or erroneous behavior, which may result in service disruptions, making the affected systems susceptible to potential Denial of Service attacks. Organizations using these Citrix products should ensure they maintain updated versions and apply relevant patches to mitigate risks associated with this vulnerability.

Affected Version(s)

ADC 0 < 14.1-73.57

ADC 0 < 13.1-64.39

ADC 0 < 14.1-73.58 FIPS

References

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

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.