CVE-2021-22919

HIGH

Citrix ADC and Gateway - Denial of Service via Disk Space Exhaustion

Title source: llm

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.

References (1)

Core 1

Core References

Vendor Advisory x_refsource_misc

https://support.citrix.com/article/CTX319135

Scores

CVSS v3 7.5

EPSS 0.0051

EPSS Percentile 66.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-770

Status published

Products (4)

citrix/application_delivery_controller_firmware 11.1 - 11.1-65.22

citrix/gateway 12.1 - 12.1-62.27

citrix/netscaler_gateway 11.1 - 11.1-65.22

citrix/sd-wan_wanop 10.2 - 10.2.9.b

Published Aug 05, 2021

Tracked Since Feb 18, 2026