CVE-2019-12991
Citrix SD-WAN and NetScaler Command Injection Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Citrix SD-WAN 10.2.x before 10.2.3 and NetScaler SD-WAN 10.0.x before 10.0.8 have Improper Input Validation (issue 5 of 6).
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 74.46% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 12 July 2019
- CISA KEV
- Listed 25 March 2022 · due 15 April 2022
- Weakness
- CWE-78
- Affected
- citrix/netscaler sd-wan · citrix/sd-wan
- Source
- cve@mitre.org
EPSS 74.5% since 27 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-2019-12991
Public exploits (1)
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.
References
- http://packetstormsecurity.com/files/153638/Citrix-SD-WAN-Appliance-10.2.2-Authentication-Bypass-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/109133Broken Link, Third Party Advisory, VDB Entry
- https://support.citrix.com/article/CTX251987Vendor Advisory
- https://www.tenable.com/security/research/tra-2019-32Exploit, Third Party Advisory
- http://packetstormsecurity.com/files/153638/Citrix-SD-WAN-Appliance-10.2.2-Authentication-Bypass-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/109133Broken Link, Third Party Advisory, VDB Entry
- https://support.citrix.com/article/CTX251987Vendor Advisory
- https://www.tenable.com/security/research/tra-2019-32Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-12991US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.