Memory Overflow Vulnerabilities in NetScaler Products by Citrix
CVE-2026-8655

8.8HIGH

Key Information:

Vendor

Netscaler
Status
Adc
Gateway
Vendor
CVE Published:
30 June 2026

What is CVE-2026-8655?

Multiple memory overflow vulnerabilities exist in Citrix's NetScaler ADC and NetScaler Gateway. These vulnerabilities can lead to unpredictable behavior or Denial of Service when the NetScaler ADC is configured as a load balancer for Oracle, as a DNS Proxy, or as a DNS recursive resolver. Upon exploitation, these flaws can disrupt services and compromise system stability, highlighting the need for immediate attention in affected configurations.

Affected Version(s)

ADC 14.1 < 72.61

ADC 13.1 < 63.18

ADC 14.1 FIPS < 72.61

References

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

CVSS V4

Score:
8.8
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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