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    CVE-2026-19490

    Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.

    Published:Aug 19, 2026
    Last Modified:Sep 10, 2026
    EPS:Aug 19, 2026
    EPSS Score:0.06002
    CVSS Score:9.8

    CISA Notification

    Description

    Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.

    Required Action:

    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.

    Notes:

    No extra notes provided.

    Due Date
    Sep 12, 2026
    Due today
    Alert Date
    Sep 9, 2026
    2 days ago

    Affected Products

    Vendor
    Citrix
    Product
    Netscaler Application Delivery Controller
    Vendor
    Citrix
    Product
    Netscaler Gateway
    Vendor
    Netscaler
    Product
    Adc
    Vendor
    Netscaler
    Product
    Gateway

    Exploits

    https://github.com/TarPeg007/CVE-2026-19490

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-127 Directory Indexing
    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

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    CVE-2025-7775 (CVSS 9.2) — Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and N…
    CVE-2025-6543 (CVSS 9.2) — Memory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and Ne…
    CVE-2025-5349 (CVSS 8.7) — Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High