CVE-2026-41527
Received Received - Intake
Privilege Escalation in KDE Kleopatra via KUniqueService Flaw

Publication date: 2026-04-21

Last updated on: 2026-04-21

Assigner: MITRE

Description
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.
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Meta Information
Published
2026-04-21
Last Modified
2026-04-21
Generated
2026-06-16
AI Q&A
2026-04-22
EPSS Evaluated
2026-06-15
NVD
CVE-2026-41527
EUVD
EUVD-2026-24513
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
kde kleopatra to 26.08.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
KEV Icon
CWE ID Description
CWE-670 The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.
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Executive Summary

This vulnerability exists in KDE Kleopatra versions before 26.08.0 on Windows. It allows local users to gain the privileges of a Kleopatra user due to a flaw in the KUniqueService mechanism, which is supposed to ensure that only one instance of the application is running. Because of this error, multiple instances can be exploited to escalate privileges.

Impact Analysis

The vulnerability can allow a local attacker to obtain the privileges of a Kleopatra user, potentially leading to unauthorized access to sensitive cryptographic functions or data. This privilege escalation could compromise the security of encrypted communications or stored keys.

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