Is CVE-2020-29547 actively exploited?

No active exploitation of CVE-2020-29547 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-29547 be exploited remotely?

Yes. CVE-2020-29547 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-29547?

CVE-2020-29547 has a CVSS score of 5.9 (MEDIUM).

HOME VULNERABILITIESCVE-2020-29547

MEDIUM

CVE-2020-29547

CWE-77Published: May 29, 2023· Updated: Jun 17, 2026

5.9

CVSS v3.1

Official Description

An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.

NVD Source

Technical Analysis

CVE-2020-29547 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.9.