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.
Published: 2016-12-30
Score: 9.8 Critical
EPSS: 94.5% High
KEV: Yes
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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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

Wed, 22 Oct 2025 00:30:00 +0000


Tue, 21 Oct 2025 20:30:00 +0000


Tue, 21 Oct 2025 19:30:00 +0000


Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.94472}

epss

{'score': 0.9444}


Mon, 14 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.94468}

epss

{'score': 0.94472}


Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.94472}

epss

{'score': 0.94468}


Mon, 07 Jul 2025 23:15:00 +0000

Type Values Removed Values Added
Metrics kev

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


Mon, 07 Jul 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Subscriptions

Joomla Joomla\!
Phpmailer Project Phpmailer
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-10-21T23:55:47.202Z

Reserved: 2016-12-22T00:00:00.000Z

Link: CVE-2016-10033

cve-icon Vulnrichment

Updated: 2024-08-06T03:07:32.161Z

cve-icon NVD

Status : Analyzed

Published: 2016-12-30T19:59:00.137

Modified: 2026-04-21T16:27:03.000

Link: CVE-2016-10033

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses