What is CVE-2020-37248?

CVE-2020-37248 is a medium-severity vulnerability, classified under CWE-348. CVSS score: 6.5/10. Published 2026-06-08.

How severe is CVE-2020-37248?

Medium severity. CVSS v3 base score is 6.5 out of 10.

CVE-2020-37248

CVE-2020-37248

OfflineIMAP before 8.0.3 trusts the server with their STARTTLS capability prior to authentication, which allows STRIPTLS/man-in-the-middle attacks, taking over the connection and extracting account credentials in cleartext.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.

Weakness classification (CWE)

CWE-348

References

cve@mitre.org
cve@mitre.org
cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2020-37248?: CVE-2020-37248 is a medium-severity vulnerability, classified under CWE-348. CVSS score: 6.5/10. Published 2026-06-08.
How severe is CVE-2020-37248?: Medium severity. CVSS v3 base score is 6.5 out of 10.