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Security Advisory; NCSC-2026-0491 [1.0.0]

Security Advisory
NCSC-2026-0491 [1.0.0]
Publicatie
12-11-2026 15:13 (Europe/Amsterdam)
Prioriteit
Normaal
Betreft
Meerdere kwetsbaarheden verholpen in Citrix Secure Access Client, NetScaler ADC, NetScaler Gateway en NetScaler Console.

Kenmerken

  • Use of Hard-coded Cryptographic Key
  • Authorization Bypass Through User-Controlled Key
  • Out-of-bounds Write
  • Missing Authorization

Omschrijving

Citrix heeft meerdere kwetsbaarheden verholpen in Citrix Secure Access Client, NetScaler ADC, NetScaler Gateway en NetScaler Console.

Citrix heeft meerdere kwetsbaarheden verholpen in Citrix Secure Access Client for Windows, NetScaler ADC, NetScaler Gateway en NetScaler Console. De kwetsbaarheden hebben CVSS v4.0-scores variërend van 6.9 tot 9.5 en omvatten onder andere geheugenbeschadiging (Memory Corruption), authenticatieomzeiling (Improper Authentication) en privilege-escalatie (Improper Privilege Management).

Misbruik van de kwetsbaarheden kan leiden tot Denial-of-Service, ongeautoriseerde toegang tot afgeschermde resources of het verkrijgen van SYSTEM-rechten op een Windows-systeem. Meerdere kwetsbaarheden in NetScaler ADC en Gateway kunnen op afstand worden misbruikt zonder voorafgaande authenticatie. Voor andere kwetsbaarheden is lokale toegang of een specifieke productconfiguratie vereist.

Oplossingen

Citrix heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.

Referenties

CVE's

Producten

Citrix
NetScaler
NetScaler ADC
NetScaler ADC and NetScaler Gateway
Secure Access Client for Windows

Disclaimer

The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.