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Vulnerability · Published Aug 5, 2021 · Assigned by hackerone

CVE-2021-22919

High 7.5

In plain English

A high-severity resource allocation without limits in Citrix ADC, Citrix Gateway, Citrix SD-WAN WANOP. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities).

Severity (CVSS NVD)7.5High
Exploit odds (30 days)0.9%top 38.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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 (as reported)

VendorProductVersions
n/a Citrix ADC, Citrix Gateway, Citrix SD-WAN WANOP Citrix ADC and Citrix Gateway 13.0-82.45 and later releases of 13.0 Citrix ADC and Citrix Gateway 12.1-62.27 and later releases of 12.1 Citrix ADC and NetScaler Gateway 11.1-65.22 and later releases of 11.1 Citrix ADC 12.1-FIPS 12.1-55.247 and later releases of 12.1-FIPS Citrix SD-WAN WANOP Edition 11.4.0a and later releases of 11.4 Citrix SD-WAN WANOP Edition 11.3.2a and later releases of 11.3 Citrix SD-WAN WANOP Edition 11.2.3b and later releases of 11.2 Citrix SD-WAN WANOP Edition 10.2.9b and later releases of 10.2

Weakness: CWE-770

References