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Citrix has issued fixes for three security vulnerabilities in NetScaler ADC and NetScaler Gateway, one of which is currently being exploited.
The vulnerabilities in question are listed below:
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Microsoft Patch Tuesday September 2026 Fixed 973 Flaws Fixed, 2 Zero-Days
CVE-2025-7775 (CVSS score: 9.2): Memory overflow vulnerability leading to Remote Code Execution and/or Denial-of-Service
CVE-2025-7776 (CVSS score: 8.8): Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial-of-Service
CVE-2025-8424 (CVSS score: 8.7): Improper access control on the NetScaler Management Interface
The company acknowledged that “exploits of CVE-2025-7775 on unmitigated appliances have been observed,” but stopped short of sharing additional details.
The problems have been fixed in the following versions, with no workarounds available:
NetScaler ADC and NetScaler Gateway 14.1-47.48 and later releases
NetScaler ADC and NetScaler Gateway 13.1-59.22 and later releases of 13.1
NetScaler ADC 13.1-FIPS and 13.1-NDcPP 13.1-37.241 and later releases of 13.1-FIPS and 13.1-NDcPP
NetScaler ADC 12.1-FIPS and 12.1-NDcPP 12.1-55.330 and later releases of 12.1-FIPS and 12.1-NDcPP
Identity Security Risk Assessment
Citrix thanks the researchers who identified the vulnerabilities.
CVE-2025-7775 is a newly exploited vulnerability in NetScaler ADC and Gateway, following CVE-2025-5777 (Citrix Bleed 2) and CVE-2025-6543.
The disclosure follows the addition of two Citrix Session Recording security flaws (CVE-2024-8068 and CVE-2024-8069) to the U.S. CISA’s Known Exploited Vulnerabilities catalog, indicating they are actively being exploited.
