CVE-2026-41527
Privilege Escalation in KDE Kleopatra via KUniqueService Flaw
Publication date: 2026-04-21
Last updated on: 2026-04-21
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| kde | kleopatra | to 26.08.0 (exc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.