Status: KEV | Advisory ID: CVE-2026-19490
| CVE | CVE-2026-19490 |
| CVSS | CVSS 9.8 (Critical). |
| Affected products | Citrix NetScaler |
| Exploitation status | Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation. |
| KEV listing | Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-09-09. |
| Exploitation prediction (EPSS) | 6% probability of exploitation in the next 30 days (93% percentile) -- FIRST.org's EPSS model. |
Citrix NetScaler ADC and NetScaler Gateway contain an authentication-bypass vulnerability involving an alternate path or channel. When the NetScaler appliance is configured as an AAA virtual server or as a Gateway (SSL VPN, ICA Proxy, CVPN, or RDP Proxy), an unauthenticated remote threat actor may be able to bypass authentication.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-19490 |
| Vendor advisory | https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696939 |