Memory Corruption Vulnerability in Citrix NetScaler DNS-over-HTTPS
CVE-2026-107409

9.3CRITICAL

Key Information:

Vendor

Citrix Netscaler

Status
Adc
Gateway
Vendor
CVE Published:
13 November 2026

What is CVE-2026-107409?

A memory corruption issue in the DNS-over-HTTPS (DoH) functionality of Citrix NetScaler can result in unpredictable behavior and may lead to denial of service scenarios. This vulnerability requires immediate attention to mitigate potential risks to network performance and availability.

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

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