CVE-2016-10033

Published Dec 30, 2016 CVSS 3.1 · 9.8 Critical EPSS 99.7% KEV · Listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DLA Debian DLA DLA-770-1 libphp-phpmailer security update
Debian DLA Debian DLA DLA-770-2 libphp-phpmailer regression update
Debian DSA Debian DSA DSA-3750-1 libphp-phpmailer security update
Debian DSA Debian DSA DSA-3750-2 libphp-phpmailer regression update
Github GHSA Github GHSA GHSA-5f37-gxvh-23v6 Remote code execution in PHPMailer
Ubuntu USN Ubuntu USN USN-5956-1 PHPMailer vulnerabilities
History
Type Values Removed Values Added
Metrics epss

{'score': 0.94472}

epss

{'score': 0.9444}

Type Values Removed Values Added
Metrics epss

{'score': 0.94468}

epss

{'score': 0.94472}

Type Values Removed Values Added
Metrics epss

{'score': 0.94472}

epss

{'score': 0.94468}

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2025-07-07'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 21, 2025, 11:55 PM
Reserved
Dec 22, 2016, 12:00 AM
Status
Analyzed
Published
Dec 30, 2016, 7:59 PM
Modified
Jun 17, 2026, 12:38 AM