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Critical 2 exploited CVEs WID-SEC-2026-3587 8 CVEs

Citrix NetScaler ADC und Citrix NetScaler Gateway: Mehrere Schwachstellen

Published Sep 27, 2026 · Updated Sep 28, 2026 · Revision 2 · de-DE

Vendor: Citrix Product: NetScaler

Summary

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Citrix NetScaler ADC und Citrix NetScaler Gateway ausnutzen, um beliebigen Code auszuführen, einen Denial-of-Service-Zustand auszulösen, Daten zu manipulieren, Sicherheitsmaßnahmen zu umgehen und weitere, nicht näher bezeichnete Auswirkungen zu erzielen.

Product

Citrix NetScaler ist eine integrierte Lösung für die Beschleunigung, das Traffic Management und die Sicherheit von Web-Applikationen. Citrix Access Gateway ist ein universell einsetzbares SSL-VPN. Advanced Access Control (AAC) ermöglichen es Administratoren, Zugriffsregeln für das Access Gateway festzulegen.

Vulnerabilities 8

  • Critical 9.5
    CVE-2026-88771 Exploited Public exploit EPSS 82%

    A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands

    Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13…

    Citrix NetScaler Gateway ADC Network devices
    KEV Sep 27, 2026
  • Critical 9.5
    CVE-2026-88772 Exploited Public exploit EPSS 77%

    Memory overflow vulnerability leading to Remote Code Execution or Denial of Service

    Vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to Remote…

    Citrix NetScaler ADC Gateway Network devices
    KEV Sep 27, 2026
  • Critical 9.3
    CVE-2026-88773 Public exploit

    HTTP Request Smuggling

    Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1-37.279 a…

    Citrix NetScaler Gateway ADC Network devices
  • High 8.8
    CVE-2026-88775 Public exploit

    Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

    Memory overflow vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 l…

    Citrix NetScaler ADC Gateway Network devices
  • High 8.8
    CVE-2026-88776 Public exploit

    Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

    Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and befor…

    Citrix NetScaler Gateway ADC Network devices
  • High 8.8
    CVE-2026-88777 Public exploit

    Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

    Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and befor…

    Citrix NetScaler ADC Gateway Network devices
  • High 8.8
    CVE-2026-88778 Public exploit

    TCP Initial Sequence Number (ISN) prediction

    Predictable exact value from previous values vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-…

    Citrix NetScaler Gateway ADC Network devices
  • High 7.0
    CVE-2026-88774 Public exploit

    Feature policy bypass due to improper HTTP URL based expression usage

    Vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to a feat…

    Citrix NetScaler ADC Gateway Network devices

Revision history

  1. #2

    Informationen von WatchTower Labs aufgenommen

  2. #1

    Initiale Fassung

References