CVE-2016-10033: Remote code execution via crafted Sender in the isMail transport

critical KEV Affects phpmailer/phpmailer. Feed 2026.10.29.1, updated 2026-10-28; published 2020-03-05; advisory modified 2025-10-22; listed on CISA KEV 2025-07-07.

Remote code execution via crafted Sender in the isMail transport

Package: phpmailer/phpmailer Composer
Affected versions: >=5.0.0 and <5.2.20 or >=5.0.0 and <5.2.18
Fixed in: 5.2.20
Severity: critical CVSS 9.8
Exploitation: KEV listed by CISA as actively exploited · EPSS 100% (100.0th percentile)
Published: 2020-03-05

References

CWE-77 CWE-88

NVD record phpmailer/phpmailer advisories

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