What is CVE-2020-29547?

CVE-2020-29547 is a medium-severity vulnerability in Citadel Webcit, classified under Command Injection. CVSS score: 5.9/10. Published 2023-05-29.

How severe is CVE-2020-29547?

Medium severity. CVSS v3 base score is 5.9 out of 10.

RCE in Citadel Webcit

CVE-2020-29547

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.

Vulnerability class: Command Injection (OS Command Injection)

Published 2023-05-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Citadel Webcit

Weakness classification (CWE)

CWE-77 — Command Injection

References

uncensored.citadel.org/msg/4576039 (Vendor Advisory)
uncensored.citadel.org/dotgoto (Issue Tracking)

Frequently asked questions

What is CVE-2020-29547?: CVE-2020-29547 is a medium-severity vulnerability in Citadel Webcit, classified under Command Injection. CVSS score: 5.9/10. Published 2023-05-29.
How severe is CVE-2020-29547?: Medium severity. CVSS v3 base score is 5.9 out of 10.