What’s Vulnerable › Vulnerabilities

CVE-2026-41527

• Severity: medium (CVSS 6.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-21 · updated 2026-10-26
• Weakness: CWE-670

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.

Affected products

• KDE Kleopatra: before 26.08.0 — fixed in 26.08.0

How to fix

Upgrade to a fixed version: KDE Kleopatra 26.08.0. Check the vendor advisory for mitigations.

References

• https://commits.kde.org/kleopatra/73471abb92d99c56354adb582bfaec2764c22b79
• https://github.com/KDE/kleopatra/releases
• https://kde.org/info/security/advisory-20260408-1.txt

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