CVE-2019-19781
Act now ● On CISA KEV — actively exploited used in ransomware
Actively exploited — on the CISA KEV list.
CVSS base
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
100.0%
100.0th percentile
CISA KEV
Listed
Added 2021-11-03 · patch by 2022-05-03
Weakness / dates
CWE-22
Published 2019-12-27 · modified 2026-08-12
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2019-12-27 — Published (NVD)
- 2021-11-03 — Added to CISA KEV (actively exploited)
- 2022-05-03 — CISA patch-by deadline
- 2026-08-12 — Last modified (NVD)
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.
Affected
References
- http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.html
- http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.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
- https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/
- https://forms.gle/eDf3DXZAv96oosfj6
- https://support.citrix.com/article/CTX267027
- https://twitter.com/bad_packets/status/1215431625766424576
- https://www.kb.cert.org/vuls/id/619785
- http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.html
- http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.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
- https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/
- https://forms.gle/eDf3DXZAv96oosfj6
- https://support.citrix.com/article/CTX267027
- https://twitter.com/bad_packets/status/1215431625766424576
- https://www.kb.cert.org/vuls/id/619785
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-19781