Memory Overflow Vulnerability in Citrix NetScaler ADC and Gateway
CVE-2026-120860

8.7HIGH

Key Information:

Vendor

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

What is CVE-2026-120860?

A memory overflow vulnerability has been identified in the traffic handling protocols of Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue can lead to unpredictable behavior or service interruptions, including Denial of Service conditions due to improper management of the load-balancing protocols such as Diameter, SIP-over-TCP, MQTT, and RADIUS. Organizations are advised to audit their systems and apply necessary mitigations to prevent potential exploitation.

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:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.