CVE-2021-38373

MEDIUM

Published Aug 10, 20214y ago · Modified Jun 17, 20262w ago

5.3 CVSS 3.1

Medium

Published Aug 10, 2021 4y ago

Last Modified Jun 17, 2026 2w ago

Description

In KDE KMail 19.12.3 (aka 5.13.3), the SMTP STARTTLS option is not honored (and cleartext messages are sent) unless "Server requires authentication" is checked.

CVSS Details

Base Score

5.3

Exploitability

1.6

Impact

3.6

Vector string

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector Network

Attack Complexity High

Privileges Required Low

User Interaction None

Scope Unchanged

Confidentiality High

Integrity None

Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 2

CWE-319

CWE-77 Command Injection Injection

Affected Products 1

Vendor	Product	Version	Range
kde	kmail	19.12.3	any

References 2

bugs.kde.org https://bugs.kde.org/show_bug.cgi?id=423423

Mailing ListVendor Advisory
nostarttls.secvuln.info https://nostarttls.secvuln.info

Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.