CVE-2020-29548: SmarterTools SmarterMail

High severity, CVSS 8.1. EPSS: 1.1% chance of exploitation in the next 30 days.

An issue was discovered in SmarterTools SmarterMail through 100.0.7537. Meddler-in-the-middle attackers can pipeline commands after a POP3 STLS command, injecting plaintext commands into an encrypted user session.

Affected products

• SmarterTools SmarterMail: up to and including 100.0.7537

Published 2021-08-17. Last modified 2026-06-17.