{"id":"CVE-2017-6316","published":"2017-07-20T04:29:00Z","modified":"2026-06-17T01:22:08Z","title":"Citrix Multiple Products Remote Code Execution Vulnerability","vendor":"Citrix","product":"NetScaler SD-WAN Enterprise, CloudBridge Virtual WAN, and XenMobile Server","tier":"core","eol":null,"description":{"text":"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.","provenance":"source","from":"NVD"},"summary":{"text":"A flaw in Citrix's NetScaler SD-WAN Enterprise, CloudBridge Virtual WAN, and XenMobile Server products allows remote code execution via improper input validation. An attacker with network access and no authentication or user interaction can execute arbitrary shell commands as root by sending a crafted CGISESSID cookie to affected SD-WAN devices (on CloudBridge devices, the cookie name is CAKEPHP instead).","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:09:55Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.7303,"percentile":0.99453,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-03-25","dueDate":"2022-04-15","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2017-6316","provenance":"source"},"vulncheckKev":{"dateAdded":"2019-12-13","exploitedFirstSeen":"2019-12-13","ransomware":false,"evidence":[{"url":"https://unit42.paloaltonetworks.com/mirai-variant-echobot-resurfaces-with-13-previously-unexploited-vulnerabilities/","date":"2019-12-13"},{"url":"https://www.f5.com/labs/articles/threat-intelligence/echobot-malware-now-up-to-71-exploits--targeting-scada","date":"2019-12-17"},{"url":"https://www.researchgate.net/publication/348602660_An_analysis_of_the_use_of_CVEs_by_IoT_malware","date":"2020-12-01"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-03-25"},{"url":"https://info.greynoise.io/hubfs/resources/GreyNoise-Early-Warning-Signals-Attacker-Behavior-Precedes-New-Vulnerabilities-Report.pdf","date":"2025-07-31"}],"evidenceTotal":5,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"references":[{"url":"http://www.securityfocus.com/bid/99943","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1039019","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://support.citrix.com/article/CTX225990","tags":["Permissions Required"]},{"url":"https://www.exploit-db.com/exploits/42345/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.exploit-db.com/exploits/42346/","tags":["Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/bid/99943","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1039019","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://support.citrix.com/article/CTX225990","tags":["Permissions Required"]},{"url":"https://www.exploit-db.com/exploits/42345/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.exploit-db.com/exploits/42346/","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6316","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Remote exploit against public-facing network appliance","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allow remote attackers to execute arbitrary shell commands as root via a CGISESSID cookie","start":57,"end":146}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Arbitrary shell command execution as root","mappingType":"primary_impact","evidence":[{"from":"description","quote":"allow remote attackers to execute arbitrary shell commands as root","start":57,"end":123}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2017-15377","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-15377","exploited":true,"exploitedSince":"2022-03-25","provenance":"source"},"exploits":[{"id":42345,"url":"https://www.exploit-db.com/exploits/42345","title":"Netscaler SD-WAN 9.1.2.26.561201 - Command Injection (Metasploit)","type":"webapps","platform":"cgi","date":"2017-07-19","verified":false,"provenance":"source"},{"id":42346,"url":"https://www.exploit-db.com/exploits/42346","title":"Citrix CloudBridge - 'CAKEPHP' Cookie Command Injection","type":"webapps","platform":"cgi","date":"2017-07-19","verified":false,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":2,"earliest":"2017-07-19"},"first":{"date":"2017-07-19","source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/42345"},"provenance":"source"},"exploitRefs":["https://www.exploit-db.com/exploits/42345/","https://www.exploit-db.com/exploits/42346/"],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2017-07-19","kind":"exploit-public","label":"First public exploit: Exploit-DB (EDB-42345)","url":"https://www.exploit-db.com/exploits/42345","provenance":"source"},{"date":"2017-07-20","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-6316","provenance":"source"},{"date":"2019-12-13","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://unit42.paloaltonetworks.com/mirai-variant-echobot-resurfaces-with-13-previously-unexploited-vulnerabilities/","provenance":"source"},{"date":"2022-03-25","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2022-03-25","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-15377","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"Exploit-DB","daysToKev":1709},"priority":{"score":69.8,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 2512 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.89,"detail":"percentile 0.9945"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD reference tagged Exploit; 2 Exploit-DB entries; 1 NVD exploit link"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.86,"detail":"base score 9.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}