How severe is CVE-2017-6316?

CVE-2017-6316 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2017-6316?

Affected package information for CVE-2017-6316 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2017-6316?

No fixed version has been published for CVE-2017-6316 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2017-6316 actively exploited in the wild?

Yes. There are 5 known exploit references for CVE-2017-6316, including 2 documented proof-of-concept exploits on Exploit-DB and 3 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2017-6316?

CVE-2017-6316 has an EPSS (Exploit Prediction Scoring System) score of 87.9%, placing it in the 99th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2017-6316 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2017-6316 (Citrix Multiple Products Remote Code Execution Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-03-25. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-04-15. The required action was: Apply updates per vendor instructions. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

Which products and versions are affected by CVE-2017-6316?

CVE-2017-6316 affects citrix netscaler sd-wan. Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2017-6316 published, and has it been updated?

CVE-2017-6316 was published on July 20, 2017 and was last updated on April 21, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2022-03-25 — agencies required to remediate by 2022-04-15

CVE-2017-6316

CRITICAL

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…

Published

Jul 20, 2017

Updated

Apr 21, 2026

Affected

0 pkgs

Patched

None yet

Exploits

5 known

EPSS Exploitation Probability

via FIRST.org ↗

87.9%probability of exploitation in next 30 days

Very High Risk99th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

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.

Affected Products

1 product · 1 configurations

Application

netscaler sd-wancitrix

≤ 9.1.2.26.561201

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-42345webappscgi

Netscaler SD-WAN 9.1.2.26.561201 - Command Injection (Metasploit)

by xort · Jul 19, 2017

Exploit-DB Source

EDB-42346webappscgi

Citrix CloudBridge - 'CAKEPHP' Cookie Command Injection

by xort · Jul 19, 2017

Exploit-DB Source

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2017-6316 in your stack?

O3 detects CVE-2017-6316 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works

CVSS Score

9.8/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

Low

PR:Privileges Required

None

UI:User Interaction

None

S:Scope

Unchanged

C:Confidentiality

High

I:Integrity

High

A:Availability

High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaponization

No known public exploit tooling found.

Timeline

First exploit

Jul 19, 2017

Disclosed

Jul 20, 2017

KEV added

Mar 25, 2022

Last updated

Apr 21, 2026

Identifiers

CVE-2017-6316

References

Advisorysecurityfocus.com Advisorysecuritytracker.com Advisoryexploit-db.com Advisorysecurityfocus.com Advisorysecuritytracker.com Advisoryexploit-db.com Exploit / PoCexploit-db.com Exploit / PoCexploit-db.com Websupport.citrix.com Websupport.citrix.com Webcisa.gov

Data from OSV.dev, enriched by O3 Security. Refreshed hourly.