Critical severity · published Dec 27, 2019
CVE-2019-19781
Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability
RansomwareIn wildKEV
9.8
CVSS
100%
EPSS
Yes
On KEV
Description
An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0. They allow Directory Traversal.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)100.0% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Nov 3, 2021
Federal remediation dueMay 3, 2022
Ransomware campaign useKnown
Affected products
Which versions
AD
Application Delivery Controller Firmware · Citrix
10.5; 11.1; 12.0; 12.1; 13.0 · source: NVD
GF
Gateway Firmware · Citrix
13.0 · source: NVD
NG
Netscaler Gateway Firmware · Citrix
10.5; 11.1; 12.0; 12.1 · source: NVD
AD
Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance · Citrix
All versions, or not specified · source: KEV
Affected product
AD
Application Delivery Controller Firmware
Citrix
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-19781
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-19781
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_CONFIRM
https://support.citrix.com/article/CTX267027
third-party-advisory
https://www.kb.cert.org/vuls/id/619785
x_refsource_MISC
https://twitter.com/bad_packets/status/1215431625766424576
x_refsource_MISC
https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/
x_refsource_MISC
https://forms.gle/eDf3DXZAv96oosfj6
x_refsource_MISC
http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.html
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