Memory Overflow Vulnerability in Citrix NetScaler ADC and Gateway
CVE-2026-120867

8.7HIGH

Key Information:

Vendor

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

What is CVE-2026-120867?

A memory overflow vulnerability has been identified in the SSL, TLS, and DTLS protocols utilized by Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue can result in unpredictable behavior or even cause a Denial of Service (DoS) situation, compromising the reliability of these critical products. It is essential for organizations leveraging these platforms to understand the implications and apply necessary updates and mitigations to safeguard their systems.

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

.