CVE-2019-19781
Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability
MITRE ATT&CK techniques
How this vulnerability maps to adversary behaviour, from the Center for Threat-Informed Defense's public CVE→ATT&CK mappings. Use it to check whether your detections already cover the technique.
Summary
Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an unspecified vulnerability that could allow an unauthenticated attacker to perform code execution.
Affected software
Vendor: Citrix · Product: Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Citrix
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2023-4966 | Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability | 100.0% | Yes |
| CVE-2025-5777 | Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability | 100.0% | Yes |
| CVE-2023-3519 | Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability | 99.7% | Yes |
| CVE-2023-24489 | Citrix Content Collaboration ShareFile Improper Access Control Vulnerability | 97.3% | Yes |
| CVE-2019-12989 | Citrix SD-WAN and NetScaler SQL Injection Vulnerability | 95.0% | Yes |
| CVE-2026-3055 | Citrix NetScaler Out-of-Bounds Read Vulnerability | 91.5% | Yes |
| CVE-2020-8193 | Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass Vulnerabili | 88.3% | Yes |
| CVE-2026-88771 | Citrix NetScaler Improper Input Validation Vulnerability | 82.2% | Yes |
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