{"id":"cisa-kev-cve-2026-19490","seq":52,"kind":"advisory","title":"[悪用確認] CVE-2026-19490: Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19490","permalink":"https://vulnpulse.app/items/cisa-kev-cve-2026-19490","summary":"Citrix NetScaler\nCitrix 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.\n対応: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. (期限 2026-09-12)","severity":"critical","techs":["citrix"],"cves":["CVE-2026-19490"],"tags":["exploited","kev","Citrix","NetScaler"],"source":{"id":"cisa-kev","name":"CISA Known Exploited Vulnerabilities"},"published_at":"2026-09-09T00:00:00.000Z","fetched_at":"2026-10-21T16:17:45.406Z"}