CVE-2021-33515
dovecot: plaintext commands injection
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 21, 2021
Updated · November 22, 2025
Description
It was found that dovecot could still accept plaintext commands while the STARTTLS negotiation process is ongoing. This could allow an active person in the middle, with valid credentials on dovecot, to, for example, steal confidential data such as the client's emails and passwords.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.2CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')