Threats / Citrix / CVE-2017-6316
CVE-2017-6316
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Citrix NetScaler SD-WAN Enterprise, CloudBridge Virtual WAN, vulnerability
Unauthenticated remote code execution as root in Citrix NetScaler SD-WAN Enterprise, CloudBridge Virtual WAN, and XenMobile Server management interfaces via improper input validation.
Verdict
Today item — known-exploited.
An unauthenticated attacker can exploit improper input validation in the management interface to execute arbitrary code with root privileges. This vulnerability is actively exploited in the wild and poses critical risk to affected infrastructure.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
5 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25).
Probability (EPSS)
EPSS 0.72596 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Citrix, NetScaler SD-WAN Enterprise, CloudBridge Virtual WAN, and XenMobile Server. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-20 Improper Input Validation.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious request to the management interface without authentication credentials.
Business
The organization's network edge and mobile device management systems are directly exposed to remote compromise.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I bypass input validation controls to inject arbitrary code into the management process.
Business
Attackers gain root-level control of critical infrastructure components, enabling lateral movement and data exfiltration.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute commands as the root user to establish persistence and control.
Business
The organization loses operational control of SD-WAN, CloudBridge, and mobile management systems with no audit trail.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05