How severe is CVE-2017-6316?

CVE-2017-6316 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-6316 being actively exploited?

Yes. CVE-2017-6316 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-25, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2017-6316?

CVE-2017-6316 affects Citrix Netscaler Sd-wan. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-6316?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2017-6316 have an EU (EUVD) identifier?

Yes. CVE-2017-6316 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-15377. It is also flagged as exploited in the EUVD (since 2022-03-25).

When was CVE-2017-6316 published?

CVE-2017-6316 was published on 2017-07-20 and last updated on 2026-06-17.

CVE-2017-6316

CVE-2017-6316 is a critical-severity vulnerability in Citrix Netscaler Sd-wan with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-03-25).

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 73% (99th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-03-25)
EU (EUVD) id: EUVD-2017-15377
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-03-25)
Affected product: Citrix Netscaler Sd-wan
Published: 2017-07-20
Last modified: 2026-06-17

Description

Citrix NetScaler SD-WAN devices through v9.1.2.26.561201 allow remote attackers to execute arbitrary shell commands as root via a CGISESSID cookie. On CloudBridge (the former name of NetScaler SD-WAN) devices, the cookie name was CAKEPHP rather than CGISESSID.

Frequently asked questions

What is CVE-2017-6316?: Citrix NetScaler SD-WAN devices through v9.1.2.26.561201 allow remote attackers to execute arbitrary shell commands as root via a CGISESSID cookie. On CloudBridge (the former name of NetScaler SD-WAN) devices, the cookie name was CAKEPHP rather than CGISESSID.
How severe is CVE-2017-6316?: CVE-2017-6316 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-6316 being actively exploited?: Yes. CVE-2017-6316 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-25, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2017-6316?: CVE-2017-6316 affects Citrix Netscaler Sd-wan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-6316?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2017-6316 have an EU (EUVD) identifier?: Yes. CVE-2017-6316 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-15377. It is also flagged as exploited in the EUVD (since 2022-03-25).
When was CVE-2017-6316 published?: CVE-2017-6316 was published on 2017-07-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:citrix:netscaler_sd-wan:*:*:*:*:*:*:*:*

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