CVE-2023-6381: Supermailer

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper input validation vulnerability in Newsletter Software SuperMailer affecting version 11.20.0.2204. An attacker could exploit this vulnerability by sending a malicious configuration file (file with SMB extension) to a user via a link or email attachment and persuade the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to crash the application when attempting to load the malicious file.

Affected products

• Supermailer Supermailer: version 11.20.0.2204 only

Published 2023-12-13. Last modified 2026-06-17.