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Known exploited · Citrix

CVE-2017-6316: Citrix Multiple Products Remote Code Execution Vulnerability

What it is

A vulnerability has been identified in the management interface of Citrix NetScaler SD-WAN Enterprise and Standard Edition and Citrix CloudBridge Virtual WAN Edition that could result in an unauthenticated, remote attacker being able to execute arbitrary code as a root user. This vulnerability also affects XenMobile Server.

Added March 25, 2022Due April 15, 2022CISA KEV catalog 2026.10.01

Vendor
Citrix
Product
NetScaler SD-WAN Enterprise, CloudBridge Virtual WAN, and XenMobile Server
Added to KEV
March 25, 2022
CISA due date
April 15, 2022
Ransomware use
Unknown

What CISA requires

Apply updates per vendor instructions.

Forensic triage

No

What to do now

  1. Find every instance of NetScaler SD-WAN Enterprise, CloudBridge Virtual WAN, and XenMobile Server you run, including the forgotten ones, and check its version against the vendor advisory.
  2. Apply the vendor's fix or mitigation, before April 15, 2022 if you are bound by CISA's deadline, sooner if it faces the internet.
  3. Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.

References

CVE-2017-6316 in the National Vulnerability Database

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Source: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.