CVE-2021-38373

kmail: STARTTLS is ignored when "Server requires authentication" not checked in UI

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Published Aug 10, 2021 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

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

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:kde:kmail:19.12.3:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-24826	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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication Single

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.527% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://bugs.kde.org/show_bug.cgi?id=423423
https://nostarttls.secvuln.info
https://nvd.nist.gov/vuln/detail/CVE-2021-38373
https://www.cve.org/CVERecord?id=CVE-2021-38373

History

No history.

Subscriptions

Kde Kmail

Weaknesses

Sources

CVE record Updated: Aug 4, 2024, 1:37 AM

Status: PUBLISHED
Assigner: mitre
Published: Aug 10, 2021, 2:51 PM
Updated: Aug 4, 2024, 1:37 AM
Reserved: Aug 10, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:01 AM

Status: Modified
Published: Aug 10, 2021, 3:15 PM
Modified: Jun 17, 2026, 4:01 AM

View source JSON

Red Hat Updated: Aug 9, 2021, 12:00 AM

Severity: Moderate
Public date: Aug 9, 2021, 12:00 AM

View source Bugzilla JSON

OpenCVE enrichment No data

No data.

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