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Fencer Vulns
medium 6.5

CVE-2020-15954 json

KDE KMail 19.12.3 (aka 5.13.3) engages in unencrypted POP3 communication during times when the UI indicates that encryption is in use.

published 2020-07-27 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-7925

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

KDE KMail 19.12.3 (aka 5.13.3) engages in unencrypted POP3 communication during times when the UI indicates that encryption is in use.

Patch / fix

  • ksmtp Debian 14, Debian 13, Debian 12 21.12.3-2
  • kdepim-runtime Debian 14, Debian 13, Debian 12 4:20.04.1-2
  • kmail-account-wizard Debian 14, Debian 13, Debian 12 4:20.04.1-2

debian advisories DEBIAN-CVE-2020-15954

  • kdepim-runtime Arch Linux 21.12.0-1

arch linux advisories AVG-2567

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-15954 updated cvss 7.5

kmail: engages in unencrypted POP3 communication during times when the UI indicates that encryption is in use

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-319 Cleartext Transmission of Sensitive Information

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.