What’s Vulnerable › Vulnerabilities

CVE-2021-38373

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-10 · updated 2026-06-17
• Weakness: CWE-77

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.

Affected products

• KDE Kmail: 19.12.3

References

• https://bugs.kde.org/show_bug.cgi?id=423423
• https://nostarttls.secvuln.info
• https://bugs.kde.org/show_bug.cgi?id=423423
• https://nostarttls.secvuln.info

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