NetScaler ADC and Gateway
CVE-2019-19781: ADC, Gateway, and SD-WAN WANOP Appliance Code Execution
An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0.
Published
ExploitedYes, in CISA KEVAdded 3 Nov 2021
Ransomware useKnownPer CISA
SeverityCRITICALCVSS 3.1 9.8
EPSS100%Chance of exploitation in 30 days
Public exploitNot tracked
FixNot yet
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| n/a n/a | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0. They allow Directory Traversal.
Exploitation
CISA lists this CVE as exploited in the wild since 3 Nov 2021, including in ransomware campaigns.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.