{"id":"CVE-2016-10033","state":"PUBLISHED","title":"The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrar","description":"The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a \\\" (backslash double quote) in a crafted Sender property.","publishedAt":"2016-12-30T19:00:00.000Z","updatedAt":"2025-10-21T23:55:47.202Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["http://packetstormsecurity.com/files/140350/PHPMailer-Sendmail-Argument-Injection.html","https://www.drupal.org/psa-2016-004","https://www.exploit-db.com/exploits/42221/","https://www.exploit-db.com/exploits/40969/","https://www.exploit-db.com/exploits/41962/","https://www.exploit-db.com/exploits/40968/","https://legalhackers.com/advisories/PHPMailer-Exploit-Remote-Code-Exec-CVE-2016-10033-Vuln.html","https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.18","http://www.securityfocus.com/archive/1/539963/100/0/threaded","https://github.com/PHPMailer/PHPMailer/wiki/About-the-CVE-2016-10033-and-CVE-2016-10045-vulnerabilities","http://packetstormsecurity.com/files/140291/PHPMailer-Remote-Code-Execution.html","https://www.exploit-db.com/exploits/40974/","https://www.exploit-db.com/exploits/40986/","https://www.exploit-db.com/exploits/40970/","http://www.rapid7.com/db/modules/exploit/multi/http/phpmailer_arg_injection","https://www.exploit-db.com/exploits/41996/","http://seclists.org/fulldisclosure/2016/Dec/78","http://www.securityfocus.com/bid/95108","http://www.securitytracker.com/id/1037533","https://developer.joomla.org/security-centre/668-20161205-phpmailer-security-advisory.html","https://www.exploit-db.com/exploits/42024/","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-10033"],"weaknesses":["CWE-88"],"ingestedAt":"2026-10-29T19:42:26.791Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2016/10xxx/CVE-2016-10033.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2016-10033","state":"PUBLISHED","datePublished":"2016-12-30T19:00:00.000Z","dateUpdated":"2025-10-21T23:55:47.202Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2016-12-22T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a \\\" (backslash double quote) in a crafted Sender property."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"http://packetstormsecurity.com/files/140350/PHPMailer-Sendmail-Argument-Injection.html","tags":["x_refsource_MISC"]},{"url":"https://www.drupal.org/psa-2016-004","tags":["x_refsource_CONFIRM"]},{"url":"https://www.exploit-db.com/exploits/42221/","name":"42221","tags":["exploit","x_refsource_EXPLOIT-DB"]},{"url":"https://www.exploit-db.com/exploits/40969/","name":"40969","tags":["exploit","x_refsource_EXPLOIT-DB"]},{"url":"https://www.exploit-db.com/exploits/41962/","name":"41962","tags":["exploit","x_refsource_EXPLOIT-DB"]},{"url":"https://www.exploit-db.com/exploits/40968/","name":"40968","tags":["exploit","x_refsource_EXPLOIT-DB"]},{"url":"https://legalhackers.com/advisories/PHPMailer-Exploit-Remote-Code-Exec-CVE-2016-10033-Vuln.html","tags":["x_refsource_MISC"]},{"url":"https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.18","tags":["x_refsource_CONFIRM"]},{"url":"http://www.securityfocus.com/archive/1/539963/100/0/threaded","name":"20161227 PHPMailer < 5.2.18 Remote Code Execution [updated advisory] [CVE-2016-10033]","tags":["mailing-list","x_refsource_BUGTRAQ"]},{"url":"https://github.com/PHPMailer/PHPMailer/wiki/About-the-CVE-2016-10033-and-CVE-2016-10045-vulnerabilities","tags":["x_refsource_CONFIRM"]},{"url":"http://packetstormsecurity.com/files/140291/PHPMailer-Remote-Code-Execution.html","tags":["x_refsource_MISC"]},{"url":"https://www.exploit-db.com/exploits/40974/","name":"40974","tags":["exploit","x_refsource_EXPLOIT-DB"]},{"url":"https://www.exploit-db.com/exploits/40986/","name":"40986","tags":["exploit","x_refsource_EXPLOIT-DB"]},{"url":"https://www.exploit-db.com/exploits/40970/","name":"40970","tags":["exploit","x_refsource_EXPLOIT-DB"]},{"url":"http://www.rapid7.com/db/modules/exploit/multi/http/phpmailer_arg_injection","tags":["x_refsource_MISC"]},{"url":"https://www.exploit-db.com/exploits/41996/","name":"41996","tags":["exploit","x_refsource_EXPLOIT-DB"]},{"url":"http://seclists.org/fulldisclosure/2016/Dec/78","name":"20161227 PHPMailer < 5.2.18 Remote Code Execution [CVE-2016-10033]","tags":["mailing-list","x_refsource_FULLDISC"]},{"url":"http://www.securityfocus.com/bid/95108","name":"95108","tags":["vdb-entry","x_refsource_BID"]},{"url":"http://www.securitytracker.com/id/1037533","name":"1037533","tags":["vdb-entry","x_refsource_SECTRACK"]},{"url":"https://developer.joomla.org/security-centre/668-20161205-phpmailer-security-advisory.html","tags":["x_refsource_CONFIRM"]},{"url":"https://www.exploit-db.com/exploits/42024/","name":"42024","tags":["exploit","x_refsource_EXPLOIT-DB"]}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"mitre","dateUpdated":"2018-10-09T18:57:01.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca"},"datePublic":"2016-12-25T00:00:00.000Z","x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2016-10033","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a \\\" (backslash double quote) in a crafted Sender property."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"http://packetstormsecurity.com/files/140350/PHPMailer-Sendmail-Argument-Injection.html","refsource":"MISC","url":"http://packetstormsecurity.com/files/140350/PHPMailer-Sendmail-Argument-Injection.html"},{"name":"https://www.drupal.org/psa-2016-004","refsource":"CONFIRM","url":"https://www.drupal.org/psa-2016-004"},{"name":"42221","refsource":"EXPLOIT-DB","url":"https://www.exploit-db.com/exploits/42221/"},{"name":"40969","refsource":"EXPLOIT-DB","url":"https://www.exploit-db.com/exploits/40969/"},{"name":"41962","refsource":"EXPLOIT-DB","url":"https://www.exploit-db.com/exploits/41962/"},{"name":"40968","refsource":"EXPLOIT-DB","url":"https://www.exploit-db.com/exploits/40968/"},{"name":"https://legalhackers.com/advisories/PHPMailer-Exploit-Remote-Code-Exec-CVE-2016-10033-Vuln.html","refsource":"MISC","url":"https://legalhackers.com/advisories/PHPMailer-Exploit-Remote-Code-Exec-CVE-2016-10033-Vuln.html"},{"name":"https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.18","refsource":"CONFIRM","url":"https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.18"},{"name":"20161227 PHPMailer < 5.2.18 Remote Code Execution [updated advisory] [CVE-2016-10033]","refsource":"BUGTRAQ","url":"http://www.securityfocus.com/archive/1/539963/100/0/threaded"},{"name":"https://github.com/PHPMailer/PHPMailer/wiki/About-the-CVE-2016-10033-and-CVE-2016-10045-vulnerabilities","refsource":"CONFIRM","url":"https://github.com/PHPMailer/PHPMailer/wiki/About-the-CVE-2016-10033-and-CVE-2016-10045-vulnerabilities"},{"name":"http://packetstormsecurity.com/files/140291/PHPMailer-Remote-Code-Execution.html","refsource":"MISC","url":"http://packetstormsecurity.com/files/140291/PHPMailer-Remote-Code-Execution.html"},{"name":"40974","refsource":"EXPLOIT-DB","url":"https://www.exploit-db.com/exploits/40974/"},{"name":"40986","refsource":"EXPLOIT-DB","url":"https://www.exploit-db.com/exploits/40986/"},{"name":"40970","refsource":"EXPLOIT-DB","url":"https://www.exploit-db.com/exploits/40970/"},{"name":"http://www.rapid7.com/db/modules/exploit/multi/http/phpmailer_arg_injection","refsource":"MISC","url":"http://www.rapid7.com/db/modules/exploit/multi/http/phpmailer_arg_injection"},{"name":"41996","refsource":"EXPLOIT-DB","url":"https://www.exploit-db.com/exploits/41996/"},{"name":"20161227 PHPMailer < 5.2.18 Remote Code Execution [CVE-2016-10033]","refsource":"FULLDISC","url":"http://seclists.org/fulldisclosure/2016/Dec/78"},{"name":"95108","refsource":"BID","url":"http://www.securityfocus.com/bid/95108"},{"name":"1037533","refsource":"SECTRACK","url":"http://www.securitytracker.com/id/1037533"},{"name":"https://developer.joomla.org/security-centre/668-20161205-phpmailer-security-advisory.html","refsource":"CONFIRM","url":"https://developer.joomla.org/security-centre/668-20161205-phpmailer-security-advisory.html"},{"name":"42024","refsource":"EXPLOIT-DB","url":"https://www.exploit-db.com/exploits/42024/"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://packetstormsecurity.com/files/140350/PHPMailer-Sendmail-Argument-Injection.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://www.drupal.org/psa-2016-004","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/42221/","name":"42221","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/40969/","name":"40969","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/41962/","name":"41962","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/40968/","name":"40968","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"https://legalhackers.com/advisories/PHPMailer-Exploit-Remote-Code-Exec-CVE-2016-10033-Vuln.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.18","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/539963/100/0/threaded","name":"20161227 PHPMailer < 5.2.18 Remote Code Execution [updated advisory] [CVE-2016-10033]","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://github.com/PHPMailer/PHPMailer/wiki/About-the-CVE-2016-10033-and-CVE-2016-10045-vulnerabilities","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://packetstormsecurity.com/files/140291/PHPMailer-Remote-Code-Execution.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/40974/","name":"40974","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/40986/","name":"40986","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/40970/","name":"40970","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"http://www.rapid7.com/db/modules/exploit/multi/http/phpmailer_arg_injection","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/41996/","name":"41996","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"http://seclists.org/fulldisclosure/2016/Dec/78","name":"20161227 PHPMailer < 5.2.18 Remote Code Execution [CVE-2016-10033]","tags":["mailing-list","x_refsource_FULLDISC","x_transferred"]},{"url":"http://www.securityfocus.com/bid/95108","name":"95108","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.securitytracker.com/id/1037533","name":"1037533","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://developer.joomla.org/security-centre/668-20161205-phpmailer-security-advisory.html","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/42024/","name":"42024","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-06T03:07:32.161Z"}},{"title":"CISA ADP Vulnrichment","references":[{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-10033","tags":["government-resource"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"id":"CVE-2016-10033","role":"CISA Coordinator","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2025-07-17T03:55:44.949090Z"}}},{"other":{"type":"kev","content":{"dateAdded":"2025-07-07","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-10033"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-88","lang":"en","type":"CWE","description":"CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-21T23:55:47.202Z"},"timeline":[{"time":"2025-07-07T00:00:00.000Z","lang":"en","value":"CVE-2016-10033 added to CISA KEV"}]}]}}}