An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5…
Priority CRITICAL 100Exploited in the wildCWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation Active In CISA KEV since 2021-11-03CISA due date 2022-05-03Known ransomware use
EPSS 0.99999 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:citrix:application_delivery_controller_firmware:10.5:*:*:*:*:*:*:* | 10.5 | Vulnerable | Citrix |
| cpe:2.3:o:citrix:application_delivery_controller_firmware:11.1:*:*:*:*:*:*:* | 11.1 | Vulnerable | Citrix |
| cpe:2.3:o:citrix:application_delivery_controller_firmware:12.0:*:*:*:*:*:*:* | 12.0 | Vulnerable | Citrix |
| cpe:2.3:o:citrix:application_delivery_controller_firmware:12.1:*:*:*:*:*:*:* | 12.1 | Vulnerable | Citrix |
| cpe:2.3:o:citrix:application_delivery_controller_firmware:13.0:*:*:*:*:*:*:* | 13.0 | Vulnerable | Citrix |
| cpe:2.3:h:citrix:application_delivery_controller:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Citrix |
| cpe:2.3:o:citrix:netscaler_gateway_firmware:10.5:*:*:*:*:*:*:* | 10.5 | Vulnerable | Citrix |
| cpe:2.3:o:citrix:netscaler_gateway_firmware:11.1:*:*:*:*:*:*:* | 11.1 | Vulnerable | Citrix |
| cpe:2.3:o:citrix:netscaler_gateway_firmware:12.0:*:*:*:*:*:*:* | 12.0 | Vulnerable | Citrix |
| cpe:2.3:o:citrix:netscaler_gateway_firmware:12.1:*:*:*:*:*:*:* | 12.1 | Vulnerable | Citrix |
- cpe:2.3:o:citrix:application_delivery_controller_firmware:10.5:*:*:*:*:*:*:* Versions 10.5 Vulnerable ·Citrix
- cpe:2.3:o:citrix:application_delivery_controller_firmware:11.1:*:*:*:*:*:*:* Versions 11.1 Vulnerable ·Citrix
- cpe:2.3:o:citrix:application_delivery_controller_firmware:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Citrix
- cpe:2.3:o:citrix:application_delivery_controller_firmware:12.1:*:*:*:*:*:*:* Versions 12.1 Vulnerable ·Citrix
- cpe:2.3:o:citrix:application_delivery_controller_firmware:13.0:*:*:*:*:*:*:* Versions 13.0 Vulnerable ·Citrix
- cpe:2.3:h:citrix:application_delivery_controller:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Citrix
- cpe:2.3:o:citrix:netscaler_gateway_firmware:10.5:*:*:*:*:*:*:* Versions 10.5 Vulnerable ·Citrix
- cpe:2.3:o:citrix:netscaler_gateway_firmware:11.1:*:*:*:*:*:*:* Versions 11.1 Vulnerable ·Citrix
- cpe:2.3:o:citrix:netscaler_gateway_firmware:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Citrix
- cpe:2.3:o:citrix:netscaler_gateway_firmware:12.1:*:*:*:*:*:*:* Versions 12.1 Vulnerable ·Citrix
Remediation
No fixed version listed by the sources yet.
Timeline
- 2021-11-03 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2019-19781
- 2026-10-03 Alias added: GHSA-jjcm-f6q3-w5xj
References
Advisory 10
- https://support.citrix.com/article/CTX267027
- VU#619785
- https://twitter.com/bad_packets/status/1215431625766424576
- https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/
- https://forms.gle/eDf3DXZAv96oosfj6
- http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.html
- http://packetstormsecurity.com/files/155947/Citrix-ADC-NetScaler-Directory-Traversal-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/155972/Citrix-ADC-Gateway-Path-Traversal.html
More Citrix Application Delivery Controller Firmware vulnerabilities
- TI-2022-10528 Unauthenticated remote arbitrary code execution in Citrix Gateway, Citrix ADC KEVCVSS 3.1CRITICAL 9.8
- TI-2020-06613 Improper input validation in Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP KEVCVSS 3.1MEDIUM 6.5
- TI-2020-06611 Improper access control in Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP KEVCVSS 3.1MEDIUM 6.5
- TI-2020-06614 Improper access control in Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP KEVCVSS 3.1MEDIUM 4.3
- TI-2018-05232 The AppFirewall functionality in Citrix NetScaler Application Delivery Controller and… CVSS 3.0CRITICAL 9.8
- TI-2020-06609 Cross-site scripting in Citrix ADC, Citrix Gateway, Citrix SDWAN WAN-OP CVSS 3.1MEDIUM 6.1
Sources
- CVE-2019-19781 · CVE Program
- CVE-2019-19781 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-jjcm-f6q3-w5xj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences