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Fencer Vulns
high 7.8

CVE-2020-27187 json

An issue was discovered in KDE Partition Manager 4.1.0 before 4.2.0.

published 2020-10-26 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-19710

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

An issue was discovered in KDE Partition Manager 4.1.0 before 4.2.0. The kpmcore_externalcommand helper contains a logic flaw in which the service invoking D-Bus is not properly checked. An attacker on the local machine can replace /etc/fstab, and execute mount and other partitioning related commands, while KDE Partition Manager is running. the mount command can then be used to gain full root privileges.

Patch / fix

  • kde partition_manager 4.2.0
  • kpmcore Debian 14, Debian 13, Debian 12 4.2.0-1

debian advisories DEBIAN-CVE-2020-27187

  • kpmcore Alpine 3.12 4.1.0-r0
  • kpmcore Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 4.2.0-r0

alpine advisories ALPINE-CVE-2020-27187

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kpmcore Arch Linux 4.2.0-1

arch linux advisories AVG-1253

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-2020-27187 updated cvss 8.4

kpmcore: kpmcore_externalcommand helper can be exploited in local privilege escalation

  • 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

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

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.