Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since July 19, 2023.
CVE-2023-3519
Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability
Citrix · NetScaler ADC and NetScaler Gateway
Added to KEV July 19, 2023
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2023-3519
- CWE
- CWE-94
- Affected products
- NetScaler ADC and NetScaler Gateway · Citrix NetScaler ADC and NetScaler Gateway · Citrix
What happened
Citrix NetScaler ADC and NetScaler Gateway contains a code injection vulnerability that allows for unauthenticated remote code execution.
What it means for your business
Citrix NetScaler ADC and NetScaler Gateway is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2023-3519). Citrix NetScaler ADC and NetScaler Gateway contains a code injection vulnerability that allows for unauthenticated remote code execution. CISA remediation due date: 2023-08-09. If you need help checking exposure, call (864) 335-9223.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date: August 9, 2023
Sources
Related briefs
Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
Citrix NetScaler is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-88779). Citrix NetScaler ADC (formerly Citrix ADC) and Citrix NetScaler Gateway (formerly Citrix Gateway) contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for a denial of service. CISA remediation due date: 2026-10-07. If you need help checking exposure, call (864) 335-9223.
Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
Citrix NetScaler is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-88772). 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 CISA remediation due date: 2026-09-30. If you need help checking exposure, call (864) 335-9223.
Citrix NetScaler Improper Input Validation Vulnerability
Citrix NetScaler is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-88771). Citrix NetScaler ADC and NetScaler Gateway contain an improper input validation vulnerability that could allow an unauthenticated attacker to execute arbitrary commands. CISA remediation due date: 2026-09-30. If you need help checking exposure, call (864) 335-9223.
Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
Citrix NetScaler is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-19490). 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 authentication. CISA remediation due date: 2026-09-12. If you need help checking exposure, call (864) 335-9223.
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