CVE-2026-120868: Citrix NetScaler ADC memory overflow in packet processing

CVE-2026-120868 · Severity: info · Published 2026-11-13

A memory overflow vulnerability exists in the packet processing engine of Citrix NetScaler ADC and NetScaler Gateway, products that manage network traffic and access for enterprises. An attacker could exploit this flaw to cause unpredictable system behavior or crash the appliance, resulting in service disruption for users relying on network access through these devices.

Technologies: Citrix NetScaler ADC, Citrix NetScaler Gateway. Vendors: Citrix.

Quick answers

Is CVE-2026-120868 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-120868 being exploited in the wild.
How severe is CVE-2026-120868?
Informational severity, published 13 November 2026.
Which products and versions are affected?
Citrix NetScaler ADC; Citrix NetScaler Gateway.
Is there a fix for CVE-2026-120868?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-120868 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-120868?
Check whether you run Citrix NetScaler ADC or Citrix NetScaler Gateway. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A memory overflow flaw exists in the packet processing component of NetScaler ADC and Gateway. The vulnerability can be triggered through network-supplied packet data, potentially allowing denial of service or erratic appliance behavior. The advisory indicates the issue may require specific packet conditions but does not detail the exact attack preconditions or whether authentication is required.

Affected products

  • Citrix NetScaler ADC
  • Citrix NetScaler Gateway

Timeline

  • 2026-11-13: disclosed

References

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