CVE-2016-10033

9.8 CRITICAL CISA KEV - Actively Exploited
Published: December 30, 2016 Modified: October 22, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://packetstormsecurity.com/files/140291/PHPMailer-Remote-Code-Execution.html
Source: cve@mitre.org
Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/140350/PHPMailer-Sendmail-Argument-Injection.html
Source: cve@mitre.org
Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2016/Dec/78
Source: cve@mitre.org
Mailing List Patch Third Party Advisory
http://www.rapid7.com/db/modules/exploit/multi/http/phpmailer_arg_injection
Source: cve@mitre.org
Exploit Third Party Advisory
http://www.securityfocus.com/archive/1/539963/100/0/threaded
Source: cve@mitre.org
Broken Link Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/95108
Source: cve@mitre.org
Broken Link Exploit Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037533
Source: cve@mitre.org
Broken Link Third Party Advisory VDB Entry
https://developer.joomla.org/security-centre/668-20161205-phpmailer-security-advisory.html
Source: cve@mitre.org
Third Party Advisory
https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.18
Source: cve@mitre.org
Patch Vendor Advisory
https://github.com/PHPMailer/PHPMailer/wiki/About-the-CVE-2016-10033-and-CVE-2016-10045-vulnerabilities
Source: cve@mitre.org
Patch Vendor Advisory
https://legalhackers.com/advisories/PHPMailer-Exploit-Remote-Code-Exec-CVE-2016-10033-Vuln.html
Source: cve@mitre.org
Exploit Patch Third Party Advisory
https://www.drupal.org/psa-2016-004
Source: cve@mitre.org
Third Party Advisory
https://www.exploit-db.com/exploits/40968/
Source: cve@mitre.org
Exploit Patch Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/40969/
Source: cve@mitre.org
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/40970/
Source: cve@mitre.org
Exploit Patch Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/40974/
Source: cve@mitre.org
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/40986/
Source: cve@mitre.org
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/41962/
Source: cve@mitre.org
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/41996/
Source: cve@mitre.org
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/42024/
Source: cve@mitre.org
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/42221/
Source: cve@mitre.org
Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/140291/PHPMailer-Remote-Code-Execution.html
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/140350/PHPMailer-Sendmail-Argument-Injection.html
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2016/Dec/78
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Patch Third Party Advisory
http://www.rapid7.com/db/modules/exploit/multi/http/phpmailer_arg_injection
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
http://www.securityfocus.com/archive/1/539963/100/0/threaded
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/95108
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Exploit Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037533
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Third Party Advisory VDB Entry
https://developer.joomla.org/security-centre/668-20161205-phpmailer-security-advisory.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.18
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
https://github.com/PHPMailer/PHPMailer/wiki/About-the-CVE-2016-10033-and-CVE-2016-10045-vulnerabilities
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
https://legalhackers.com/advisories/PHPMailer-Exploit-Remote-Code-Exec-CVE-2016-10033-Vuln.html
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Patch Third Party Advisory
https://www.drupal.org/psa-2016-004
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.exploit-db.com/exploits/40968/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Patch Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/40969/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/40970/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Patch Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/40974/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/40986/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/41962/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/41996/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/42024/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/42221/
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-10033
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

43 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
94.4%
100th percentile
Exploitation Status
Actively Exploited
Remediation due: 2025-07-28

Weaknesses (CWE)

CWE-88 CWE-88

Affected Vendors

wordpress phpmailer_project joomla

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