CVE-2019-19781
Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 100.00% probability · 100th percentile
- Public exploits
- 3 in Exploit-DB · first 11 January 2020
- CISA KEV
- Listed 3 November 2021 · due 3 May 2022 · used in ransomware campaigns
- Weakness
- CWE-22
- Affected
- citrix/application delivery controller firmware · citrix/netscaler gateway firmware · citrix/gateway firmware
- Source
- cve@mitre.org
EPSS 100.0% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2019-19781
Public exploits (3)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
| EDB-ID | Title | Type | Published | Verified |
|---|---|---|---|---|
| EDB-47930source ↗ | Citrix Application Delivery Controller (ADC) and Gateway 13.0 - Path Traversalmultiple · Dhiraj Mishra | webapps | 16 January 2020 | no |
| EDB-47913source ↗ | Citrix Application Delivery Controller and Gateway 10.5 - Remote Code Execution (Metasploit)multiple · mekhalleh | webapps | 13 January 2020 | no |
| EDB-47901source ↗ | Citrix Application Delivery Controller and Citrix Gateway - Remote Code Execution (PoC)multiple · Project Zero India | webapps | 11 January 2020 | no |
References
- http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155947/Citrix-ADC-NetScaler-Directory-Traversal-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155972/Citrix-ADC-Gateway-Path-Traversal.htmlThird Party Advisory, VDB Entry
- https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/Broken Link, Third Party Advisory
- https://forms.gle/eDf3DXZAv96oosfj6Third Party Advisory
- https://support.citrix.com/article/CTX267027Vendor Advisory
- https://twitter.com/bad_packets/status/1215431625766424576Broken Link, Third Party Advisory
- https://www.kb.cert.org/vuls/id/619785Third Party Advisory, US Government Resource
- http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155947/Citrix-ADC-NetScaler-Directory-Traversal-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155972/Citrix-ADC-Gateway-Path-Traversal.htmlThird Party Advisory, VDB Entry
- https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/Broken Link, Third Party Advisory
- https://forms.gle/eDf3DXZAv96oosfj6Third Party Advisory
- https://support.citrix.com/article/CTX267027Vendor Advisory
- https://twitter.com/bad_packets/status/1215431625766424576Broken Link, Third Party Advisory
- https://www.kb.cert.org/vuls/id/619785Third Party Advisory, US Government Resource
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-19781US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.