CISA-confirmed known exploited vulnerability

CVE-2019-19781

Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability

Citrix · Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance

Vulnerability details

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.

Added to CISA KEV: 2021-11-03

Ransomware campaign use: Known

CISA due date: 2022-05-03

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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