What’s Vulnerable › Vulnerabilities

CVE-2019-11550

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-05-08 · updated 2026-06-17
• Weakness: CWE-295

Description

Citrix SD-WAN 10.2.x before 10.2.1 and NetScaler SD-WAN 10.0.x before 10.0.7 have Improper Certificate Validation.

Affected products

• Citrix Netscaler Sd-Wan: from 9.0.0 through 9.3.6; from 10.0.0 before 10.0.7 — fixed in 10.0.7
• Citrix SD-WAN Center: from 10.1.0 through 10.1.2; from 10.2.0 before 10.2.1 — fixed in 10.2.1

How to fix

Upgrade to a fixed version: Citrix Netscaler Sd-Wan 10.0.7; Citrix SD-WAN Center 10.2.1. Check the vendor advisory for mitigations.

References

• https://support.citrix.com/article/CTX247735
• https://support.citrix.com/v1/search?searchQuery=%22%22&lang=en&sort=cr_date_desc&prod=&pver=&ct=Security+Bulletin
• https://support.citrix.com/article/CTX247735
• https://support.citrix.com/v1/search?searchQuery=%22%22&lang=en&sort=cr_date_desc&prod=&pver=&ct=Security+Bulletin

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