# CVE-2019-12991: Citrix SD-WAN and NetScaler Command Injection Vulnerability

> CVE-2019-12991: Citrix SD-WAN and NetScaler Command Injection Vulnerability. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2019-12991
Last updated: 2025-10-21T23:45:33Z

- Published: 2019-07-16 17:16 UTC · Updated: 2025-10-21 23:45 UTC · Assigner: mitre
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 74.5%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-03-25, federal due date 2022-04-15, ransomware use: Unknown

## 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).

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Citrix: SD-WAN and NetScaler

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2019-12991)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2019-12991)
- [http://packetstormsecurity.com/files/153638/Citrix-SD-WAN-Appliance-10.2.2-Authentication-Bypass-Remote-Command-Execution.html](http://packetstormsecurity.com/files/153638/Citrix-SD-WAN-Appliance-10.2.2-Authentication-Bypass-Remote-Command-Execution.html)
- [https://support.citrix.com/article/CTX251987](https://support.citrix.com/article/CTX251987)
- [https://www.tenable.com/security/research/tra-2019-32](https://www.tenable.com/security/research/tra-2019-32)
- [http://www.securityfocus.com/bid/109133](http://www.securityfocus.com/bid/109133)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2019-12991 · Markdown: https://rewindex.com/cve/CVE-2019-12991.md · JSON: https://rewindex.com/api/v1/cves/CVE-2019-12991 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:14:02.580Z