CVE-2021-38373
CVE-2021-38373 is a medium-severity vulnerability in Kde Kmail with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- CVSS v2: 3.5
- EPSS exploit prediction: 1% (41st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-77
- Affected product: Kde Kmail
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-38373?
- 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.
- How severe is CVE-2021-38373?
- CVE-2021-38373 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2021-38373 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-38373?
- CVE-2021-38373 affects Kde Kmail. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-38373?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-38373 published?
- CVE-2021-38373 was published on 2021-08-10 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:kde:kmail:19.12.3:*:*:*:*:*:*:*
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