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CVE-2017-6316

Improper Input Validation — is CVE-2017-6316real, exploitable, or a false positive? Here's the community ground truth.

Critical · CVSS 9.8EPSS 72.6%CISA KEVCWE-20 · Improper Input Validation

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

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.

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Community ground truth

Community verdict

3 verdicts
Not a real issue

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Community real-world severity: Critical (Critical 3) — CVSS base score 9.8

In line with its CVSS base score.

Field notes & remediation

Verdicts are the quick signal — notes are the evidence and fixes behind them.

  • 0
    Field note · Hanna BergCurated

    Citrix Multiple Products Remote Code Execution Vulnerability — 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. Listed in the CISA KEV catalog (added 2022-03-25) — confirmed exploited in the wild, not theoretical. FIRST EPSS puts the chance of exploitation in the next 30 days at ~73%. Treat it as real and prioritize remediation over triage.

  • 0
    Remediation · Sam WhitakerCurated

    Required action for Citrix NetScaler SD-WAN Enterprise, CloudBridge Virtual WAN, and XenMobile Server: Apply updates per vendor instructions. CISA set a federal remediation due date of 2022-04-15. After patching, verify the vulnerable path is no longer reachable before closing the finding.

Same weaknessCWE-20 · Improper Input Validation.