ACTIVELY EXPLOITED
CVE-2023-3519: Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability
| Vendor | Citrix |
|---|---|
| Product | NetScaler ADC and NetScaler Gateway |
| Actively exploited | Yes |
| Added to CISA KEV | 19 Jul 2023 |
| CISA federal deadline | 9 Aug 2023 |
| Ransomware use | Known |
| Weakness (CWE) | CWE-94 |
Required action (CISA's text)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Description (NVD)
Citrix NetScaler ADC and NetScaler Gateway contains a code injection vulnerability that allows for unauthenticated remote code execution.
SOURCES
Other Citrix flaws
- CVE-2026-88779: Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
- CVE-2026-88772: Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
- CVE-2026-88771: Citrix NetScaler Improper Input Validation Vulnerability
- CVE-2026-19490: Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
- CVE-2026-8452: Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.