High severity7.5NVD Advisory· Published Aug 5, 2021· Updated Jun 17, 2026

CVE-2021-22919

Description

A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway), and Citrix SD-WAN WANOP Edition models 4000-WO, 4100-WO, 5000-WO, and 5100-WO. These vulnerabilities, if exploited, could lead to the limited available disk space on the appliances being fully consumed.

Affected products

Citrix Systems/Gateway
cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*
Range: >=12.1,<12.1-62.27
Citrix Systems/Access Gateway
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*
Range: >=11.1,<11.1-65.22
Citrix Systems/Netscaler Application Delivery Controller
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
Range: >=11.1,<11.1-65.22
Citrix Systems/Sd Wan Wanop
cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:*
Range: >=10.2,<10.2.9.b
Citrix Systems/ADCllm-create
Citrix Systems/NetScaler ADCllm-fuzzy
Citrix Systems/SD-WAN WANOP Editionllm-fuzzy
Range: 4000-WO, 4100-WO, 5000-WO, and 5100-WO

cvss	0.488
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

CVE-2021-22919

Description

Affected products

Patches

Vulnerability mechanics

References

News mentions