High severity · published Aug 5, 2021
CVE-2021-22919
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…
7.5
CVSS
0.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NA
NetScaler ADC · Citrix
12.1 before 12.1-62.27; 13.0 before 13.0-82.45 · source: NVD
AD
Application Delivery Controller Firmware · Citrix
11.1 before 11.1-65.22; 12.1 before 12.1-62.27; 13.0 before 13.0-82.45; 12.1 before 12.1-55.238 · source: NVD
SW
Sd-wan Wanop · Citrix
10.2 before 10.2.9.b; 11.2 before 11.2.3.b; 11.3 before 11.3.2.a; 11.4 before 11.4.0.a · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22919
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22919
Vendor Advisory
https://support.citrix.com/article/CTX319135
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