CRITICALCVSS 9.8Actively exploited · CISA KEV since 2026-09-09Vulnerability
CVE-2026-19490
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.
Properties
- Euvd product
- Gateway, ADC
- Vulnerability name
- Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
- First seen
- 2026-10-07T18:01:17+00:00
- Cvss score
- 9.8
- Epss score
- 0.23158
- Last seen
- 2026-10-19T12:00:27+00:00
- Due date
- 2026-09-12
- Euvd assigner
- NetScaler
- Retrieved at
- 2026-10-21T01:24:49+00:00
- Exploited euvd since
- 2026-09-09T00:00:00+00:00
- Src batch id
- epss_history-20261020T103617Z-728ddd
- Source url
- https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
- Date added
- 2026-09-09
- Euvd base score version
- 4.0
- Score
- 9.8
- Fetched at
- 2026-10-20T10:36:20+00:00
- Euvd vendor
- NetScaler
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- In Signal since
- initial import (Sep 2026)
- Euvd base score
- 9.3
Related Entities (7)
AFFECTS_PRODUCT (4)
DESCRIBES (1)
HAS_WEAKNESS (1)
INVOLVES (1)
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