What is CVE-2026-41527?

CVE-2026-41527 is a medium-severity vulnerability in KDE Kleopatra, classified under Always-Incorrect Control Flow Implementation. CVSS score: 6.9/10. Published 2026-04-21.

How severe is CVE-2026-41527?

Medium severity. CVSS v3 base score is 6.9 out of 10.

Vulnerability in KDE Kleopatra

CVE-2026-41527

KDE Kleopatra before 26.08.0 on Windows allows local users to obtain the privileges of a Kleopatra user, because there is an error in the mechanism (KUniqueService) for ensuring that only one instance is running.

Published 2026-04-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.9 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.002 (4.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Affected products

KDE Kleopatra — versions 0

Weakness classification (CWE)

CWE-670 — Always-Incorrect Control Flow Implementation

References

Frequently asked questions

What is CVE-2026-41527?: CVE-2026-41527 is a medium-severity vulnerability in KDE Kleopatra, classified under Always-Incorrect Control Flow Implementation. CVSS score: 6.9/10. Published 2026-04-21.
How severe is CVE-2026-41527?: Medium severity. CVSS v3 base score is 6.9 out of 10.