What is CVE-2020-29548?

CVE-2020-29548 is a high-severity vulnerability in Smartertools Smartermail, classified under Command Injection. CVSS score: 8.1/10. Published 2021-08-17.

How severe is CVE-2020-29548?

High severity. CVSS v3 base score is 8.1 out of 10.

RCE in Smartertools Smartermail

CVE-2020-29548

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.

Vulnerability class: Command Injection (OS Command Injection)

Published 2021-08-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Smartertools Smartermail

Weakness classification (CWE)

CWE-77 — Command Injection

References

www.smartertools.com/smartermail/release-notes/current (Release Notes, Vendor Advisory)
nostarttls.secvuln.info/ (Third Party Advisory)

Frequently asked questions

What is CVE-2020-29548?: CVE-2020-29548 is a high-severity vulnerability in Smartertools Smartermail, classified under Command Injection. CVSS score: 8.1/10. Published 2021-08-17.
How severe is CVE-2020-29548?: High severity. CVSS v3 base score is 8.1 out of 10.