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Threat Brief: NetScaler Zero Days CVE-2026-88771 and CVE-2026-88772 Exploited in the Wild (Updated September 30)
Unit 42 is aware of possible 0-day activity against NetScaler devices. Citrix reports CVE-2026-88771, CVE-2026-88772 have been exploited in the wild. The post Threat Brief: NetScaler Zero Days…
prio37middelKwetsbaarheden in Citrix NetScaler ADC en NetScaler Gateway: update nu
Er is een aantal kwetsbaarheden gevonden in Citrix NetScaler ADC en NetScaler Gateway. De ernst van deze kwetsbaarheden varieert, met CVSS-scores tot 9,5. De kwetsbaarheden betreffen verschillende beveiligingsproblemen die onder meer kunnen leiden tot het omzeilen van beveiligingsmaatregelen, het onbruikbaar maken van
prio20laagKwetsbaarheden verholpen in NetScaler ADC en NetScaler Gateway
Citrix heeft 8 kwetsbaarheden verholpen in NetScaler ADC en NetScaler Gateway. De volgende ondersteunde versies van Citrix NetScaler ADC en Citrix NetScaler Gateway zijn kwetsbaar: - Citrix NetScaler ADC en Citrix NetScaler Gateway 14.1 vóór versie 14.1-73.37 - Citrix NetScaler ADC en Citrix NetScaler Gateway 13.1 vóó
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2026-014: Critical Vulnerabilities in Citrix NetScaler ADC and Gateway
On 27 September 2026, Citrix published a security bulletin addressing 8 vulnerabilities affecting customer-managed Citrix NetScaler ADC and Citrix NetScaler Gateway, among which 2 critical unauthenticated Remote Code Execution (RCE) vulnerabilities. Citrix has confirmed active exploitation of these 2 critical vulnerabi
prio15laagCVE-2026-88771: Citrix NetScaler Improper Input Validation Vulnerability
Citrix NetScaler ADC and NetScaler Gateway contain an improper input validation vulnerability that could allow an unauthenticated attacker to execute arbitrary commands. Vereiste actie: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Bas
prio65hoogCVE-2026-88772: Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for remote code execution or denial of service Vereiste actie: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04
prio65hoogCVE-2026-19490: Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
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 aut
prio40middel2026-010: Critical Vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway
On 19 August 2026, Citrix published a security advisory addressing multiple critical vulnerabilities in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway). CERT-EU recommends updating affected devices as soon as possible.
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