Quick answers
- Is CVE-2026-4368 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-4368 being exploited in the wild.
- How severe is CVE-2026-4368?
- Informational severity, with a CVSS score of 7.7, published 23 March 2026.
- Which products and versions are affected?
- Citrix NetScaler ADC; Citrix NetScaler Gateway.
- Is there a fix for CVE-2026-4368?
- 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-2026-4368 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-4368?
- Check whether anything you run is named in the advisory. 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 race condition (CWE-362) exists in NetScaler ADC and NetScaler Gateway appliances. The vulnerability is triggered when the appliance is configured as a Gateway (supporting SSL VPN, ICA Proxy, CVPN, or RDP Proxy) or as an AAA virtual server. This flaw in concurrent execution using shared resources leads to 'User Session Mixup,' where session data or identities may be incorrectly associated between different users. An authenticated attacker could potentially exploit this timing issue to gain access to another user's session, compromising confidentiality and integrity. NetScaler has assigned a CVSS 4.0 score of 7.7, indicating a high severity impact.
Affected products
- Citrix NetScaler ADC
- Citrix NetScaler Gateway
Timeline
- 2026-03-23: disclosed
- 2026-03-23: advisory: Original advisory published by NetScaler/Citrix