Quick answers
- Is CVE-2026-111341 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-111341 being exploited in the wild.
- How severe is CVE-2026-111341?
- Informational severity, published 13 November 2026.
- Which products and versions are affected?
- Citrix NetScaler ADC; Citrix NetScaler Gateway.
- Is there a fix for CVE-2026-111341?
- 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-2026-111341 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-111341?
- 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 vulnerability exists in the client-certificate authentication handling of Citrix NetScaler ADC and Gateway. The flaw can be triggered during certificate validation, leading to denial of service or erratic behavior. The attack requires an attacker to present a malformed client certificate during the TLS authentication phase.
Affected products
- Citrix NetScaler ADC
- Citrix NetScaler Gateway
Timeline
- 2026-11-13: disclosed