CVE-2019-19781
CRITICALCVSS 9.8/10Actively ExploitedEPSS 100.00%
Last modified
CVE-2019-19781 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 100.00% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
100.0th percentile
Probability of exploitation in the next 30 days. Learn more
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Citrix | Application Delivery Controller Firmware | 10.5 |
| Citrix | Application Delivery Controller Firmware | 11.1 |
| Citrix | Application Delivery Controller Firmware | 12.0 |
| Citrix | Application Delivery Controller Firmware | 12.1 |
| Citrix | Application Delivery Controller Firmware | 13.0 |
| Citrix | Netscaler Gateway Firmware | 10.5 |
| Citrix | Netscaler Gateway Firmware | 11.1 |
| Citrix | Netscaler Gateway Firmware | 12.0 |
| Citrix | Netscaler Gateway Firmware | 12.1 |
| Citrix | Gateway Firmware | 13.0 |
References
- http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.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/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
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2019-19781?
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.
How severe is CVE-2019-19781?
CVE-2019-19781 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 100.00% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2019-19781?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2019-19781?
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Scan your code nowSource: NVD / NIST