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CVE-2016-10033: PHPMailer Command Injection Vulnerability
PHP PHPMailer · in CISA KEV since 2025-07-07
2025-07-07added to KEV
2025-07-28federal remediation due date
99.71%EPSS exploit probability (30 days) 100.0th percentile
9.8 CRITICALCVSS 3.1
Unknownknown ransomware use
3,111days from NVD publication to KEV
What it is
PHPMailer contains a command injection vulnerability because it fails to sanitize user-supplied input. Specifically, this issue affects the 'mail()' function of 'class.phpmailer.php' script. An attacker can exploit this issue to execute arbitrary code within the context of the application. Failed exploit attempts will result in a denial-of-service condition.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-77;CWE-88 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2016-12-30 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2016-10033.json · all KEV CVEs
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